Not to mention Sustain helped out SMN who are partied with players who use a controller to play. I have to adjust my targeting in order to select something or someone outside of my party, not to mention if there is a lot of other players around cycling through the available choices could take a while. People who play with a mouse and keyboard can mouse over, great, I can't since I'm on a PS$ and use a controller. Sustain's removal is one of those, "what were you thinking?", choices