The new system and the old system. Constrained.

[AlexiaKidd]

Basic attack accounts for a very large portion of damage.

But they entire battle system is being overhauled so what applies now won't matter. They said in the battle reform blueprint that they wanted to make sure battles were challenging and you could not win with just auto attack.

Edit to add:

Can you even give me one instance in the game where you actually need to stop attacking the mob for a brief period of time and then during that time you can build you can build your stamina back up?