i use my right sided buttons for the basic 1-2-3 combo with burst strike on one trigger, and GF combo with continuation on the other trigger. On the left side of the controller, like the d-pad, I use for common oGCDs and buffs. I know I got bloodfest, blast zone, no mercy, rough divide, bow shock, and sonic break, but i've also got personal raiding stuff like my potion and shirk on there. The important thing is that your whole rotation can be easily seen on the hotbar. This does mean you need to put all your defensive cooldowns in the back. I access those with pressing both triggers. This also means you won't know how long itll be until your cooldown is back up unless you've got an innate feeling for it, or you map out cooldowns to correspond to certain mechanics. Using Heart of Stone can be a pain in this regard because accessing it means more APM, but it's easily overcome with practice.