On my druid I have all abilities that go with the shapeahift I’m in on thr main bar. Anything that stays the same no matter the form I have either on my mouse or bound to something on my keyboard.
I use a lot of shift modifiers and buttons around wsad. Q, e, z, x, f and then some of those have shift modifiers like q and e. Buttons on my mouse mapped to my numpad and then I just have those on skills. Going from shaman to druid I find I have more free keybinds