To be honest the best modern Apple UI happened after era of Jobs. iDevices during his tenure were pretty bad designs heavily based on skeuomorphism. The current

To be honest the best modern Apple UI happened after era of Jobs. iDevices during his tenure were pretty bad designs heavily based on skeuomorphism. The current usability issues in OSX are something that he'd likely have supported, or made even worse. In a way Jobs managed to replace himself, at least for the short term, with something even better. Which should be the goal of everyone.