Personally I feel like while World and Rise have been a nice distraction, it's time for MonHun to return to more of its roots. Before World, inventory management and quest management was a relevant aspect of the game.
On a more meta sense, I feel the franchise is starting to get kinda.... brand-isolationist? Or too maker-branded. Like, back in XX/GU we used to have lots of crossover stuff with pretty muh any franchise in the form of not just cosmetics but also weapons. Ace Attorney. Animal Crossing. Some random JPN-exclusive boxing franchise. Dunno, maybe a Japanese car maker. World at least gave us the Witcher and XIV crossovers (BIRD UP!*). With actual plotlines, even! But Rise? We're lucky to get cosmetics. And then there's the lack of cross-save, let alone cross-play...
I believe you can take Risebreak as a collab outlier. Rise was very affected by pandemic happenings and there probably was just no way or reason to pick up the slack in Sunbreak.
I think, especially with the appearance of CapcomID, cross play/save are a near guarantee for the next title. They know full well everyone wants it.