If they make a KHUx movie, with what are they going to pack it with? Melody of Memory + KHUx movie? Yet another ReMix re-re-re-re-re-re-re-re-re-re-release, but with MoM and KHUx movie (The Story So Far + More To Come? hahahahaha).
Yeah I'm thinking it's not too far-fetched to think they might package KH3/ReMind/MoM together as part of a next-gen performance upgrade next year (III.5? lol idk), in which case, a Ux movie seems plausible? I know I'm parsing words here but Nomura technically said "a little break in
new titles," which I take to mean games (which, for the record, could also leave the door open to a Disney+ announcement). But who knows

leave it to Nomura to be vague.
Ux movie packaged with the next full game is possible, but would be a departure from how they've done things thus far
I think with all the plot threads Nomura has laid out, he's clearly very eager to move forward into new narrative territory. I have a hard time imagining he'll want to hold up that next step with a full-fledged Ux playable remake.