What Line hasn't been made yet but you wish someday a manufacturer would pick up the license and run with it

For me I have the following wishes:

Indiana Jones Preferrably by Hasbro and same scale as SW
Ghostbusters Movie line not the cartoons, very realistic...I'm thinking McFarlane
The Goonies One of my favorite movies and would make for some neat figures
M.A.S.K. Re-Release, these were the best toys of the 80's behind GI Joe in my book, up the scale to 3 3/4" and bring back a new cartoon...mmmmm

And right now at #1 is Sesame Street style Muppets figures

Someone is sitting on a serious goldmine

Indiana Jones!  

Buffy Legends: ML style line devoted to Buffy / Angel figures, by Toy Biz or Art Asylum, anyone who actually cares.

For me, it's not about property so much as format.

All of my dream toylines would be in 3 3/4" scale; small, collectible, and poseable. I love this scale since it's a space-saver, allows for a LOT of diversity, is usually pretty affordable, and is small enough for some decent sized vehicles, playsets, or homemade dioramas. Those are the rules; here's my list:

- Star Trek - Art Asylum has great sculptors but c'mon, 7" figures? Who's got that kind of space after you do the crews from each series? Get with the program! And give me Bridge Playsets, dangit!

- DC Comics - DC Direct has a superb line of 6" figures, but I'm looking for Super Powers 2, with a line as diverse and easily available as DCD's line. But with VEHICLES and PLAYSETS!

- Muppets - The only reason I DON'T collect this line is scale. I love these guys but again, little space.

- Space: 1999 - I had some of these toys as a kid and watched the show religiously. I'd buy these by the gift set if someone offered them in 3 3/4" scale. Gimme a big honkin' Eagle Transporter, too, while you're at it.

- Marvel Comics - Take most of the figures from the Legends and Spidey Classics lines, scale 'em down, take out some of that nasty looking articulation, and I'll buy a ton to go with my DC figures.

- Indiana Jones - While 21st Century acquiring this license would be the obvious way to go here, they're a wee bit big for 3 3/4" scale. Still, all that wonderful 1:18 scale WWII stuph shouldn't go to waste.

- The X-Files - Yeah, McFarlane did movie figures, but there was also a TV series that was never capitalized on, a few years worth as I recall. Cancer Man, the Lone Gunman, and the rest really need to be immortalized in plastic.

- American Idol - Why a toy manufacturer hasn't jumped on this hot TV property is beyond me. Put out a 3-pack of judges with an electronic base that includes phrases from "I think you could do better" to "That is the worst sound I have ever heard bar none."

- Friends - You know, Friends. Joey, Monica, Chandler, Rachel, Ross, and Phoebe? Maybe Richard and Ursula? Ross' ex-wife and Ban would be fun.

- Seinfeld - The best part of this line is that the figures don't really have to do anything to stay authentic to the show. Jerry's apartment is a must-have playset, and maybe the Soup Nazi's kitchen.

There are probably dozens of properties out there I'd be totally into. Gimme a TV Land assortment including Adam West's Batman, George Reeves' Superman, and Gilligan's Island. I'm an Abbott & Costello fan, as well as a Universal Monsters afficionado.

Just give it to me in that beloved 3 3/4" scale.  

Great topic, I can't really think of any other ideas that haven't already been mentioned.  The ones I have always thought about/wanted:

Indiana Jones (SW size and style)
Seinfeld (my all time fave show, I think a line of these would do pretty well)
Goonies (agreed, that would make a cool line of figs too)

I'll also second the MASK redo idea, I thought that toyline was great when I was a kid.  Otherwise, my favorites from my childhood have pretty much be resurrected in great style (He-Man, Marvel, GI Joe, and the new Batman figure looks nice).

- Space: 1999 - I had some of these toys as a kid and watched the show religiously. I'd buy these by the gift set if someone offered them in 3 3/4" scale. Gimme a big honkin' Eagle Transporter, too, while you're at it.

A big Eagle One Transporter  eh!
Lucky I still have mine & the 9" figures.  

For me I would like to have anything from Blade Runner

Only 2 lines of figures stand out in my mind.

Krull- movie figs for this one would be great.

Army of Darkness-Sure we've got the larger Ash and Bad Ash figs, but wouldn't you like some 3 3/4" size figs of Ash, Bad Ash, Ash's chick, the smithy, the weasel guy who whips him at the biginning of the movie, King Arthur, Prince Henry the Red, Skeleton warriors...

Star Wars:  Yeah, a GOOD (And by good I mean competitive and near flawless) toy line completely in-scale with each other (3.75"/1:18)...  The ultimate toy line in honor of the greatest series of films ever.  No corners cut, no holds barred, and no thoughts to varying demographics...  Just the collectors.

Star Trek:  A great and expansive 3.75" line for the modern Star Trek Series and movies would be so wonderful...  Something akin to my Star Wars ideas, but just set in the continuing missions of the U.S.S. Enterprise and her various spin-off series like DS9, and the films like First Contact and Nemesis...  Great series deserving of great toys.

Indiana Jones:  I'm predicting this will be the most mentioned series here...  And rightfully so...  IJ is a long overdue series of great toys.  Again in 3.75" and done as flawless as a toy line could be done.  

IE:  Hasbro can't do it.

Starcom:  The U.S. Spaceforce would be great if it was brought back, and given updates...  I'd keep the small scale it was in before, but build on it with things like removeable helmets, maybe extra articulation (Possible now), and such...  Starcom rocked, and was ahead of its time when it came out way back when.  I've often considered selling my collection only to realize I have to keep it...  Too bad it's so underappreciated as a toy line.

G.I. Joe:  When I was a kid, Joe was THE toy line...  Today, it's got a broad appeal and is really the flagship license for Hasbro anymore, but it's not what I'd like it to be personally...  I'd take the possibilities of todays articulation/features/sculpting, and give Joe a make over in the 3.75" scale...  The feel of the original 1982 line would be there (The "realistic" feel/look) while the figures would be 10x as detailed, poseable, and accessories galore.

Joe still captures my attention, even if it's not my "thing" anymore, and I think it's the greatest toy line ever...  No other toy line but Barbie and Lego can possibly even hope to acheive the longevity in the industry, nor the massive ammounts of success.

Nothing but the absolute best could compete with my childhood memories of playing with the best toys I ever had.  Yo Joe!

Awww crap how did I forget LOTR!?!?!

You're right, I want a 3.75" LOTR line...  EVERY character made, and made to perfection...  Uruk-Hai sold by the 10-pack...  Same with Rohan soldiers, Gondor soldiers and rangers, Moria Orcs, and they could go further into Middle-Earth lore beyond the films and the trilogy and do various "EU" Dwarves, elves, etc...

I mean THIS would be a huge line I think...   Figures and monsters out the whazzoo...  Oh the diorama's I would create!

Functiioning sheathes for swords and daggers...  Bows with quivers of arrows...  Cloth cloaks for super poseability...  NO action features what-so-ever...  Immensely detailed inter-connecting playsets...  Every character done in every outfit with the best detail and articulation imagineable...  

Heaven would be carded if this were the case.

And then Lego would get a license to do LOTR as well...  Talk about some great medeival lego sets.    Helm's Deep Lego style?  Oh yeah....  Mini-figure Orcs?  Yup.  It was an obvious license Lego just shoulda gone for.