I want Fallen Anakin, but he shouldn't be next. Sometime in the next two years, though. I don't really like the Jabba idea. Like I'm sure it could be pulled off pretty well, but I'm just not that into the idea. I honestly feel like we don't need another Obi-Wan, and Jedi Luke will come when the game needs it.
Snoke is the only one on this list that makes sense for Ep. 7-9 content that is coming after LSTB.
I think Jedi Luke would probably be a hero's journey or epic confrontation but other than that I agree with the above. Most likely the next event we will get will be a Kylo Ren hero's fall/villains Journey or something for his Ep9 version. The fallen Anakin (or really a no armour/undamaged Vader since he was technically Vader at that point was my favourite idea tho).
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Snoke is the only one on this list that makes sense for Ep. 7-9 content that is coming after LSTB.
Obi-Wan Kenobi would require Sith characters to unlock
Supreme Leader Snoke would require Resistance characters to unlock
Jedi Knight Luke Skywalker would be available in the Battle of Endor Raid
Fallen Anakin would be the reward for completing Anakin Skywalker's Heroes Downfall