Does anyone know of some kind of list with all the old skills and when they were removed? I'm sure there are some I don't even remember anymore.

I definitely miss Shadow Flare though (but I preferred the oGCD version of it). From AST I miss extending buffs, Disable, and the old cards.
I also miss MCH's Bishop Autoturret. MCH doesn't even have that many buttons, so why not give them their AoE turret back?