I vote a yes for the option of displaying all 3 action bars, and for drag/dropping abilities, and for options for reducing ability descriptions and/or options for removing them.
I understand that SE has to keep in mind that people will be playing in 3 different ways, but you simply cannot be everything to everyone. You can't have everything you can do on a keyboard also available on a gamepad (without having to access a main menu option), and I think gamepad players realize this. SE should just give options where they can, and if they can't fit them on a gamepad, oh well, that's the trade-off.
And btw: I play on a gamepad.