My thinking is to keep a combat assault helo simple and crashable like a Blackhawk. Hey, a Blackhawk is so tough you can literally loose all power, bottom the collective and hit the ground at 1500fpm and walk away
Now that's some helo pilot talk.
You mentioned a AEW or ASW version of the MV-22 for smaller flight decks. I believe in this thread, somewhere, Jeff Head has a pic of a proposed AEW version of an Osprey