I don't mind duels, thats opt in so everybody is prepped for the fight, but invading is actually starting to annoy me now that I'm helping my buddy in coop. I don't really have a good pvp build, but as you said that doesn't matter - you just need one of the way too good abilities to deal with them. So now I have a permanent slot dedicated to the madness eye-laser spell that stunlocks and kills most invaders almost instantly because protection against madness is actually kind of hard to come by and it outranges almost every weapon arte. Every invasion turns into an annoying game of hiding, waiting to see the red guy, and then stalking him until he is in a position where he won't be able to escape my eyebeams. It was kind of funny at first, but now I'm really tired of this dance. The worst part is, half the time we were just walking to another site of grace to prep for a boss or something, so its not even like there's a threat of lost progress anymore. Its just an annoying loss of time and potential need to re-set up our coop game.