Hi!
I really don't like the system where you have to switch too (sometimes the hero gets stuck, stops an auto-attack animation etc.). I once made a proposal, that every hero who uses more than one "wheel"should have the same system as Sauron- passive abilities in the "wheel", actives at the right side. (with the exception of mode switching heroes like this Angmar Dunedain hero)
The Team said, that this is a specialty of sauron and should stay unique in the mod. (as far as i can remember)
But i agree with you, that it would be way easier when every hero uses this system. (even if this hero doesn't have more abilities than buttons in the wheel)
I don't think that this should be restricted to heroes:
Every active ability should be at the right side (the ones of units as well- for example the artillery shot of the Dunedain), all passive abilities and upgrades should stay in the wheel. And since with version 4.0 the builders won't be there anymore, this wouldn't lead to a clash with the old Building system and would ease up the interface.
I'd like to post this, in German, in the concept area, as long the team doesn't say anything against it.
But i don't think that the base interfaces are that complicated... Anyway, they will change pretty much with Version 4.0, at least you won't get confused by the place of the workers ^^