I feel like improvements over Colemak are going to be pretty incremental at this point. In this case, there's a pretty big trade-off on leaving home row for the sake of not reaching for the H.

What I'd like to see is some proper innovation like good programmer-usable chorded layouts that work with existing inexpensive hardware (I don't mind buying a good non-ghosting keyboard, but I don't want to pony up a few grand for a Velotype).