You can go active without targeting anything today. You can go active with something targeted and not actually engage. Why on earth would they take that away and have going active suddenly turn into flailing about with your lance. Attacking should still be a deliberate action to engage the targeted enemy.

Yes - a mage might need TP for certain moves. But not all builds will need TP. It's easy to build a healer/buffer that never uses TP and only uses MP.

It's just completely unnecessary to link active to auto-attack. Auto-attack my require that you be active - but being active should not require that you be auto-attacking.

...and who are the guys in behest running around throwing cures the whole time....oh....