If you want to spend the money, get yourself some kind of a pedal (a special input device or a race pedal, both will do). You can bind your dps / heal / tank to those and while moving with your hands you just keep doing what you have to do by using your feet. The result for me was amazing (same feeling as when i started to use the click macro's).

I'm trying an idea out now where i have a leading shaman that i control with my left hand and the tank with my right hand. Basically a macro that tells my shamans not to follow the tank/leader but my shaman chief, as i have found that moving 4 chars at a time is very inaccurate (i can only assume due to lag). With that i mean that the forward/back/left/right are send to all toons at the same time. Now the fun part in what i try to master is that i give that command via voice. So far it's promising, but i haven't really tried it in a hard situation, only in AV. The reasoning behind it is that i'm a new player that don't know the fights in the instances, that is not very familiar yet with all the buttons on my keyboard and that i run in trouble when i miss parts of the fight by looking at my keyboard too much. Saying what i see/want goes faster then hitting the propper button.