This was mentioned in the patch notes for Mayhem 2.0/ Mayhem level 4. Honestly I don’t like the idea of this. Event exclusive items are one thing but keeping some weapons exclusive to higher difficulty is less desirable. This was part of the problem with OP in BL2. Having better quality rewards pressures players in to higher difficulties even if they would rather not. We then start down the train of thought that we need the most powerful build that requires the least amount of effort to get the best results.
I understand wanting to reward the players who work hard to optimize there characters. That is more then fair. I feel as if OP levels in BL2 had one of two effects on people when the reached level cap. Number one was, they where all in and going all the way to max OP level and going to farm gear and everything or number two is, I can’t or don’t want to achieve that level so I’m not going to continue playing this game. Granded I know there where some players who stayed comfortably at level 72 and never did any OP while still playing the game for ages but they where in he minority.
I just don’t want to see Mayhem Mode have that effect on the community. I love all the activity we have here in the forums and I don’t want to see people pushed out of enjoying this game because Mayhem Mode makes the same mistake that OP did. Maybe I’m overly paranoid, honestly I probably am XD I still wanted to share my thoughts regardless.