operative concealment, around 5 attacks, juggernaut vengeance a bit more if i remember, both mercenary trees, and i guess few more
How is operative concealment easy? It's one of the more complex rotations out there (obviously not marauder-level, but still). Even if the number of buttons may be low (with which I disagree), you have to deal with tactical advantage juggling. I thought PowerTech Pyro was universally considered the simplest right now?