You get full control over most Nikon lenses with the proper adaptor. Electronics are sort of irrelevant. A bolt adaptor gives you aperture control over the lenses that need it, and most older Nikkors have aperture rings. As for EOS glass, if you want to use that then you're stuck using a Canon camera, that's just how things work...so what you're saying is that you want a Canon version of the AF100. Problem here: EOS has a huge flange distance so you can't use many different kinds of glass on it. M4/3 allows you to use a huge variety. I think the advantages of being able to use a massive variety of glass, including PL mount (without body modification) lenses (with full functionality I might add) more than makes up for the lack of functionality when using EOS lenses. I'd rather be able to use any lens ever made other than EOS than only EOS.
EOS has one of the shortest FF distances of any SLR, only FD is shorter. It's only "huge" in relation to micro 4/3. My main beef with Canon is that they didn't keep the FD's FFD.
Dave