Discord Action bar will remain in my opinion the best most customisable and aesthetic and elegant action bar ever created for wow.

Pity blizzard treated its addon developer community with complete scorn from what I could see as a user. especially since end game raiding and gameplay and interfaces were basically totally dependant on addons. And anybody who tells you the standard action bar was sufficient or better was psychologically deranged. and that wow without addons is fine, is basically out of their mind. maybe its not so bad presently if blizzard learnt from those addons what they were getting wrong and then stole the best bits for nothing.