Easy. 1) GET RID OF GNOME/HILDON. Simply put, it's bloat, and doesn't deliver the bang-per-buck that a simple X11+WindowMaker or other GNUStep desktop delivers. Not only would our tablets be faster and more responsive, but we'd have oodles more memory available. Unfortunately, I don't think this is ever going to happen, primarrily because the people working on the 770 have never seen a Linux box that didn't have GNOME or KDE installed. *sigh*. I'm on the verge of doing this myself, just to see how big the difference is.
3) GIVE UP ON HANDWRITING RECOGNITION. Nobody uses it!