I'd take a couple Hoth waves actually... I think there's lots of improvements to be made to the figures all around, such as:
Wave 2, Basic Figures:
-Super Articulated Hoth Han... soft-goods hood that folds down, removable hat and goggles. Include a 50% of run variation where he's snowcovered, and that would rock (For an outdoors Han). And of course, both versions come in both blue and brown again.
-Major Derlin... Decently articulated body, removable hat and goggles, working holster with blaster sidearm, cloth scarf piece attached to helmet.
-Hoth Astromech/Gonk 2-pack... A white Gonk with the top-mounted power ports, and any astromech from echo base they've yet to make in a single set (Reuse the Gonk and astromech bodies of course).
Wave 2, Ultra Figure:
-Torryn Farr with Hoth Ion Control Console... A LARGE (bigger than the sensor readout with Riekean) screen, command chair, and Torryn's sporting 14 points of articulation with a removable headset. Light-up screen for Ion control wouold be nice.
Wave 3 Basic Figures:
-Hoth Luke... Basic Luke (not damaged), with improved articulation at the legs/mid-arms. Working holster with blaster, removable hat w/cloth scarf and removable goggles (good ones). I like the Saga figure, but a basic one that was more poseable with more "stuff" would've been nice.
-Hoth Leia... Super Articulation, or as close as they could get, and maybe have her come with some Echo Base accessories like boxes or whatnot for the hallways of Echo Base for the "Scruffy Nerfherder" moment? An EU Datapad would be neat too since she was busy getting the base set up and all.
-Rebel Snowspeeder Pilot... Generic Pilot figure with blue emblem helmet (Or could be a Dak figure). Include head variation Wedge and Hobbie even? 12-14 POA on them.
Wave 3 Ultra Figure:
-Hoth Rebel Technician w/ Vehicle Maintenance Energizer... True-scale (new) Veh. Energizer with hoses, tools, etc... Hoth Technician includes a removable hat, and decent articulation.
Wave 4 Basic Figures:
-Super Articulated Hoth Rebel Footsoldier... Just as the name says... Removable helmet with head variants would be neat, but not necessary. Simple head variants with molded on hats would be nice though. A cloth scarf on one would rock too. Good plastic used on the backpacks and rifles as well, and a working holster with sidearm of course. I'd buy this one in droves.
-Luke Snowspeeder Pilot... New sculpt from the previous generic one, and include a grappling hook weapon that attaches to Luke's belt, working holster with blaster pistol, and sabre connects to his belt as well (removable blade). Removable helmet of course as well.
-Hoth Rebel Officer... Head variant of the Derllin figure released with a backpack, macrobinoculars, and a blaster rifle for out in the trenches.
Wave 4 Ultra Figure:
-Multi-piece Anti-Infantry Tower (Large tower from trenches)... Just the tower, no figure necessary, but would be a great set... Comes in pieces so you build it, and can take it apart like it's blown up. Door opens and it has an interior w/ladder to the port out the top. Perfect for the new officer with his binoculars!
Playset:
-Hoth Trench playset... They make a full-scale piece of trench, for maybe $15 or $20... The trench can interconnect turned any direction to the same set, so you buy more and can make a zig-zag trench diorama like... The set includes:
-Super Articulated Snowtrooper with cloth mask and skirt piece, working holster, no rank bars (Just a grunt).
-Hoses/power boxes.
-1 Rebel tri-pod cannon (collapsable).
$20 would make this a great piece I think... Lots of fun, and one everyone would want multiples of I'd wager.

I'd buy it I'm sure, and would love how it would look with the anti-infantry tower too.