I can see ixion making it into the game,atomos won't due to CT sub boss, siren and diabolos are also out now, alex I can see making an appearance at some point, shiva and ramuh we know are coming.
Doomtrain or knights of the round and magus sisters, I'd love to see just not sure how they could fit .
Anima! Please please!
VAlefor is out due to CT as well.king cactaur would be fun, as well as pandemonium.
There are just soo many they can draw from.