One thing that I, personally, am positive of, is that a revised version of RM needs to be a single book. And that this book contains everything needed to play (except perhaps a setting

).
In discussions on the ICE forums, I have mentioned that I think that this means truncated combat tables, with the attack matrix and the crits on a single page (much like the HARP product 'Hack & Slash'). With something like that, we could then do an Arms Law supplement that expands upon this, and allows players to get the extra, larger tables if they want.
I am also planning that there should be only a single table for other maneuvers (again much like HARP). As this would make it easier to fit with the one book goal.
The question then becomes more focused on the skills, and on spells...