I think we need resculpts of Aayla and Barriss before anything else, as well as Coleman Kcaj to serve as a decent Ongree Jedi to have for both AOTC and ROTS display purposes. If I had to pick one Jedi that's never been made, it would definitely be Jastus Farr, and eventually all of the remaining Jedi from the Purge comic.

I also want K'Kruhk, Tarados Gon, Roth-del Masona, and of course Sha'a Gi.