I'd argue for an ATB with more movement during the fights as Nomura pointed out it'd be weird to see HD models just walking a few step forwards and shooting for sole animation.
Anyways I wouldn't worry too much about the remake staying true to the original, as the three names announced so far are all part of the original pre-production commitee. IMO the things that will change are the things they couldn't do at the time of FFVII due to a lack of staff and technological means.








