Just a simple and obvious point for future discussion I'd like to add here. h:
Totally open for you to use as a reference point when you're analyzing what's going on.

The RSX cannot go anywhere but upmarket as it moves with Acura. It does seem to me that Acura may keep it in the lineup but move it closer up to the TSX. Hey, we're talking heated mirrors already! Then again, I don't expect to see a RSX with 200 hp just like the TSX on the base trim/model. Huh.

In any case, the new Civic Si coupe will be plenty powerful and Acura will continue to make its coupe more powerful but also better-endowed featurewise.

It's a win-win!