I feel that the recent additions ruled out any Star Tours replacement in the short term. It's also the only way any pre ROTJ stuff is represented as the timeline thing still exists at Galaxy's Edge (that and I like Star Tours anyways). I can see Japan's biting the dust as it did not get the updates and their other tomorrowland rides are getting redos, but not the US one. If Star Tours does get replaced, I'd think a KH attraction would be perfect as you can reuse the same infrastructure and format of star tours, and could be done cheaply (swap out the C-3POs with Donald or Goofy and redress the animatronics out in the queue).
For figment, I do feel an Inside Out attraction is inevitable, but I do feel v4 can happen, mostly because of the Figment cameos that keep happening in Pixar films (he appears on a sign in TS4 in addition to the random Inside Out 2 cameos). A theater attraction a la Cranium Command would be perfect for it, even less people go to the theater, than JII, which also barely gets any crowds. Both need replacements of some kind, though I do feel the other likely option would be gutting everything but the DVC lounge (magic eye theater included) for a largish inside out ride. That being said, I still think there will be nothing added to Epcot announced at D23, except for maybe a blue sky segment, the focus of investment has shifted to AK and MK anyways.