I find myself designing a TRPG (Final Fantasy Tactics, Disgaea) with Grandia time & space mechanics in my head; take position even a bit more seriously than Grandia did, but build on a TRPG balance and skill structure. Basically end up with a much more dynamic take on the TRPG, which has always been a bit of a static experience. The canceling mechanics coming from Grandia would be banger in that sort of more dynamic TRPG.

There is, of course, a lot of games all around that space but I don't know of anything that quite matches what I'm laying out here.

(Although the cancellation mechanics would need some careful attention. It allows for a whole bunch of weak characters to keep a single strong character down by always cancelling what they're doing. I suppose just turning it into a skill check itself instead of being 100% as it is in Grandia would do the trick, though.)