I agree with David, the next "version" of RM really shouldn't do anything to the core rules, but rather should be a "setting" version, probably including the RME rules. I suppose this is what the game-that-shall-not-be-named did, and quite frankly is what got me into Rolemaster, the setting not the system. I think the current core rules could stay the way they are for quite a few years (kind of like HERO5 has lasted that system for what 4 years now?), just create a setting that is "new" and can be hyped and make good money for the company.
I'd presonally like to see this setting in the ShadowWorld, since there is already so much there to tap into. Just create a new MasterAtlas but with gaming rules, etc.
And I know with ICE's history, a lot will frown on this, but I also would like to see a licensed setting, since I think that drives a lot of new players more then a "fresh" setting. A lot of people new to roleplaying are wanting to adventure in their favorite books/movies, and that wrapped in the Rolemaster rules means lots of good, fresh gamers who will after using the basic RME rules will want more depth and buy the RMC rules, etc. Course, the question is, which setting?
For Fantasy, I'd love to see David Eddings Belgariad adopted into Rolemaster rules. Plenty of Cultures, Professions, etc. For more modern, I honestly think a Harry Potter setting would fit into Rolemasters world. The spells would just need to be adjusted with latin names. Plus my guess is that kind of license would do well in sales (but it may be one of the harrier licenses, no pun intended, that ICE wants to veer away from).
-shnar