For what it's worth, they're the only hard part about it. Granted I was playing with strong players, but it just felt like a numbers game more than a strategy game. That isn't to say that it doesn't involve strategy. It just seemed like I was still being told what to do and wasn't being challenged to think outside of the box. I don't like when games throw me in dumb situations just for the sake of it.
Like the mines for example. They're literally only there to make you move out from your head glitching spot. These mechanics get on my nerves. If they were instead summoning more powerful enemies or turrets for the AI to use, then I'd be more pressed to go there. Say for example, if 3 summoning circles had to be destroyed simultaneously or a powerful Ogre would spawn. But insta wipes because it's absolutely stupid for me to jump into the middle of the Cabal and stand on a tiny circle? Okay.
Am not trying to say I wish I could camp a spot. But being forced to run around mindlessly while there are millions of adds flooding the room doesn't seem like good game design. Frankly it's probably why PvE players struggle in PvP. The game is teaching you to run around aimlessly.