The one figure that I'd like to see made above all others has not been made yet and I know the chances of her being made are pretty non-existent.
Ever since reading the King of the Snake Men mini-comic, I've been in love with everything about that issue and it still stands as my favorite MOTU story to this day. It had everything in it, He-Man, Skeletor, a new enemy from Eternia's past, a great barbaric feel to it and one of the few times we've ever seen a woman associated with the Snake Men, plus the art was simply gorgeous for a mini-comic.
As the years went by, it always bothered me that the Snake Men never really had a woman in their ranks, but every time my mind would race back to that mini-comic and despite being nothing more than a background character to make King Hiss look that much more imposing, I've always wanted to see King Hiss' slave girl in action figure form.
So no, if the line ended today, I would not have the one figure that I want the most and I know the chances of her ever being made are pretty non-existent, but still I cross my fingers for a surprise, hoping that someone decides they could use a female member and have her be that member. And no, that cheap Snake Teela variant never counted as someone I wanted associated with them.
For now though, hopefully we get to a Spinnerella as King Hiss could always kidnap the pretty dancer to amuse him as he sits upon his throne, watching the lithe Rebel hypnotically entertain him with her graceful moves.