I think the subdivision in genres is way too coarse.
Take JRPGs: there's an obvious difference between action RPGS and turn-based ones. For the formers there's all kinds of combat actions you could bind to motion controls. For the latter, not so much is needed beyond buttons and a d-pad, besides maybe having a cursor on-screen controlled by IR if you need one.
In general the more "abstract" your rendition of gameplay, the less motion controls will be useful.
Edit: dang, I had missed the line in your OP where you made the same distinction, disregard it :) I suggest another (sub)genre that would work well with IR, and it's dungeon crawlers a-la Diablo.







