Focus confirmation light for manual focus lenses would be great. Right now, only chipped adapters do that, if you use an adapter or lens without electronics, the camera displays F00 and won't confirm focus with the green dot on the viewfinder. I tried but gave up after much analysis of the firmware disassembly. I think the firmware we can update doesn't deal with that at all, there's probably another chip dedicated to the autofocus stuff.
