I've got the following characters that I'm considering.
SaeSee tinn in clone armor
IG-88 Style Lancer Droid
Wolfman Jedi
Hammerhead Jedi
Snow Bunny Padme
Now, I just need to stop talking about these guys and start making them.
I know what you mean. I have all these ideas for customs coming out my ears...but i don't have the fodder or skills, in one case to do them. It's doubly hard since most of my customs are 12 inch.

a few I've been toying with:
Captain Typho- this was the one i was getting so excited about the other day, until i realized i don't have any red cloth for the uniform. I was thinking of using what i've got so far for my "Unnamed Padawan" Kitbash as either Quinlan Vos, jedi Luke (all i need is a head, which will be coming from a buddy in Ontario), among other ideas.
Snowbunny Padme (was thinking of doing this one before the challenge came along...ROTS Bariss Offee would be perfect, seeing as how she has the cowl thing already under her hood, just in black. Just repaint the face, and add the Arena Padme outfit (if available)
Season 2 Anakin- more or less just add the shoulder plate from Ultimate Anakin/Vader to his regular jedi uniform, only painted a brown/rust color, to match his robe, along with a cape. The gloves might be tricky to do, since the UV vader hands look more than a little like Lobster claws, the left one particularly.
Shaak Ti- heh...potentially the easiest one of the bunch...take a regular Shaak Ti, and just add a brown robe, and an electrostaff made from a bamboo skewer or even a piece of wire cut from a coat hanger
That's just a few for now...