Agreed this idea is pretty radical change wise and its almost 100% certain that battle system changes have already been decided upon and are being coded and hopefully tested already by devs.

In practice the idea doesn't work so well because you essentially are building stamina by using up TP to then activate abilities. For some jobs this is ok like tanking but for DD's this is backwords, you don't want to use abilities after an attack but rather just before in order to buff your next WS. I agree one of the major flaws is the way that we can stack so many attack buffs in a row or emnity moves in quick succession without stopping it makes jobs less unique and more spam happy. This "fast pace of game play" is just spamming stuff as fast as you can. Implementing Auto attack to me is only going to solve half the battle problem. The other side is adjusting the all jobs spam every ability and bust out retarded 3k+ dmg spikes. I think ppl should be forced to make choices no matter the route they take where you must balance your desire to do more dmg vs staying alive etc.