I’d rather see the DK standard empower attacks against enemies under 25% health. It’s the coolest ultimate in the game and isn’t used much, at least in PvE. By empower I don’t mean the buff, just a % damage increase.
Wardens are in need of one as well, just change the fletcher ability somehow.
frankly im not sure every class needs an execute or a function similar to it. I think classes with executes should have lower damage overall before the execute, which the execute makes up for. that's just me tho.