Most can agree that tab targeting / GCD based combat feels slow and is outdated in comparison to action combat.
Instead of the auto-attack we currently have, what if WoW had an active weapon attack ability that is not affected by the game's GCD that can act as a filler in between other abilities? Would that create the illusion of a faster paced / more fun gameplay?
WoW can easily be made to feel like an action combat game by changing all single target attacks into frontal AoE attacks not requiring a target. I think the game needs more of these, especially for melee classes.
Edit:
The idea is that you're already spamming the button of your next rotation ability, except nothing is happening so you keep bashing the button until GCD timer ends. Instead of bashing a button without anything happening, why not switch to an off GCD ability while waiting for GCD timer to finish. Wouldn't it make for a more interesting, non repeatable mindless pattern of 1, 2, 3, 4 rinse and repeat? Have the off GCD spammable ability be weak but trigger combos that are different every now and then and get rid of exact rotations...dynamic game play would make it more interesting imho instead of 1,2,3,4 or 1, spam, 2, spam, 3, spam...etc
WoW is not fully tab targeting, just so you know, half the skills don't require a target. Casters have no auto-attack either. Just trying to explore ways to make melee classes feel fun, paladin is horrible now for example, but that's mostly for lack of enough active skills and the GCD changes.