I agree with the OP about the Night Widows being way over powered. I've also seen them take down an entire 8 man team, it's not a pretty sight.
It was an 8 man pickup team (I was playing my lvl 24 mind/psy dom), and of course the leader sets the mission of the highest level person on Invincible so everything is red/purple to me. I had never fought NW's before, so I was surprised when the grenade hit and all the enemies vanished and we went from kicking butt to a team wipe within about 10 seconds. But I knew what had happened, and how to counter it. I asked if anyone had Tactics, and was greeted with silence so I assume no one did. I had 2 yellows on me and told everyone to make sure if they had them to use them.
So we try again. And again we're kicking butt until the smoke grenade hits and everything disappears. I pop my yellow and can see again, which does me no good since no one else can see and I still have the massive to-hit debuff on me. The only people with heals were 2 darks and a kinetic, so once the smoke grenade hit all the heals stopped since there were no enemies to be seen to target off of and we all die again.
3rd times the charm right? We all arrive back from the hospital angry and wanting revenge. I use my last yellow as the smoke grenade hits, and everything just...stops. On our side anyways... most of our team is standing around like useless dolts being beaten on by invisible enemies. Then my last yellow wears off and the enemies pull their disappearing act again. I see the brute is still able to fight (he must have some kind of built in +perception power) so I run up next to him to try and fight whatever he's fighting, hoping I can hit it if I'm in melee range and target through him but some error message pops up about the enemy being "too hard to see" before I die again.
We assemble again, there's only the boss and a few others left. The were 4 of us on the Night Widow, and she killed 2 of us before we finally put her down for good.
We move onto the next mob, another Night Widow and another team wipe seconds after the smoke grenade hits. I go to the hospital and log off in disgust, having just endured the worst pickup team ever. The players were fine, but those bosses are so ridiculously overpowered I wanted to rip out my hair in frustration. I like a challenge as much as the next person, but requiring us to bring along a full tray of yellows or have a certain power pool is not right. This isn't the same as having to bring along break frees, b/c most enemy mezzes only affect one person at a time, and wear off quickly. This one boss will cripple an entire team if they don't have the right powers, and if there's 1 NW per mob you'll run out of yellows very quickly. There was no way for that team, with the powers that we had, to beat that mission without incurring tons of debt.
Maybe player -perception powers should work that way too! My fire/kinetics troller could drop Smoke/fire cages on a mob, then run in with Hot Feet turned on and stand there while they all slowly burn to death, unable to attack me. Oh wait, that would be overpowered wouldn't it? Of course it would! So why do enemies get to do that to me?
Anyways, after that horrifying experience I changed my whole build and worked in Tactics so that would never happen again. Personally I think they should make the NW bosses appear only in the late game. How many players have Tactics in their build by lvl 24?!
