One of the thing I liked about FFXI was their combo system. Current BR is ok but it's not like what combo system used to be. I also like the idea of Incapacitation but not the current way it is done. So here's what I think would be interesting

Bring in FFXI combo system with incapacitation status! with the addition of auto trigger super attacks!

EX.

Red Lotus II -> Heavy Tramel (bind) -> Concussive Blow II => Incapacitate Leg & Head and triggers Simian Trash!

something along that line....... I think it would bring some identity to class as well