If XI had an overhaul to it, I would happily go back. Graphics remake, interface, combat pace. Those are about the only things that are too dated for my liking.

Combat "is" horrendously slow, and resting for twice as long is rather bad. XI could benefit from updating certain parts of it. The "core" of the game is still great imo anyways. Still love it's layout, design (aside from Abyssea), soundtrack, atmosphere. I would sooner hop in XI v2 2014 Overhaul Edition over ARR.

In short, if XI ever got the graphics fidelity and combat "pace" of ARR, I'd return for years once again. The archaic parts of XI are not the overarching gameplay elements, but the fundamental gameplay elements.