It all depends on who you play with. And yes I still think they have the simplest role. I have all 3 classes lv31 Commando, lv30 op, lv30 eng. The lack of a good tank that doesn't know how to pull aggro will be the most difficult problem that is why I chose black widow and shield rather than Deatomizer. My fingers have gotten used to it so my attacks are more accurate when it comes to timing for the duration of buffs. It's not fun lol but it does kill faster. I can switch to page 2 and use all 4 skills in 2-3 seconds. Depending on if I'm lagging or not. But hey you should play with me sometime my tank can pull aggro reall well so most of the time or should I say it's rare that someone dies in my group. I didn't say you have to wait for the Cooldown of amplify pain. Rather it's more effective on bosses that you spam each skill after it has cooled down.