I use the mouse for all movement. I have the Naga but rather than having keybindings on it I put my strafe, jump, automove, focus target, etc on the mouse keys and use a-g for my routine abilities, z-b for melee, q-t for cc and such with the 1-6 keys for med packs, stims, etc. That leaves my F-Keys open for targeting party members. I also use the space bar for enemy targeting and tab for friend targeting.
It is kind of abnormal but I am a touch typist and home row for the left hand is super easy for me to reset to and that gives me 20 keys in 4 rows to organize my abilities by function. I can toss in shift and control for another 20 keys each if needed.