i think classes need more class only traits / skills, like in FF11 not all passive skills passed over to main job when you sub-job. also FF14 needs some passive traits that grow with rank. while the traits that can be bought with marks should be more then buy & equip. but some type of quest or cut-scene where the player bought formal training. what i also think FF14 needs is more unique abilities like FF11's 2-hour abilities that is only for that class only.
class swapping animation... well i dont like the time it currently takes to swap classes and adding some animation to it would prob slow down the time to swap classes. as a thm/cnj i tend to swap classes in between pulls to try to spread the SP over both classes. even using a macro my timing has to be almost on the dot to go into passive mode and swap classes and i use a macro to do it all. so i dont want to see an animation that might increase class swapping.