1) I wouldn't mind a glow around Carby maybe for the element?
2) Yep, size option like we have now for /bahamutsize
3) Reading the tooltips they showed off we still have outburst, looks like tri disaster is now a straight up aoe hit, ruin 4 is a heavy aoe, still have energy siphon and it looks like the gem constructs all do some aoe/cleave