As much as i'd love them to branch out to older stuff such as KOTOR, Starkiller and other legend stuff, Hot Toys tend to play it safe. How many variants and 2.0 have we got compared to original releases?Why not ? They've done a million Vaders, and all the standard Dark side users. Why not branch out into extended universe. Which many collectors would like.
They've clearly seen they need to go to comic versions and can branch out with "What If" versions for Marvel Characters......and presumably also alternative comic Batman versions with that Batman announcement.
I can't think of anything else they could do other than Darth Magus, Plaegius, Revan etc. They also have some pretty cool designs.
But we will see.
They clearly have the skills to surprise us with a Bane, Revan, Malak or Plagueis but i wonder if they believe in the potential of such figures.
To me, taking into account their past moves, they are more likely to dig into more recent material. Ventress, Opress or Sidious from TCW are characters that will speak toa wider audience. Alternate look from main characters are also more likely in my opinion. A fully battle damages vader, a turned Luke Skywalker maybe? Or a Darkside Rey... even though it seems Howard doesn't feel like revisiting the sequels anytime soon.