LOL! That sucks... it would literally be worth it to see someone try and keep that up by clicking for a 15 minute WZ. I'm sure someone could click 3 abilties in 1.5 seconds a few times consistently... but to keep that up for an entire WZ, I just don't see how someone could pull that off.
Especially tanking or healing. The only way you could effectively heal or guard swap would be to at least key bind the friendly targeting.... but then it's still binding.