Grunker
RPG Codex Ghost
Nah just pressing space is fine. Just don't use power ups you do not want on your skill.
You don't need to press space. You put the single power-up you want (more is not worth skill investment) on non-spammable skills, and set it to auto. It gets quite obvious the more you play that not only does it get rid of an annoying system, it's also optimal.
my left and right click attacks would always use up all the rage.
Putting power-ups on spammable skills is not worth it except in niche cases like mana generation or similar, and even then, you only do it when you can sustain rage.
But hey, you do you. I think the system is so poor I wouldn't remove it from auto even if it was more optimal.