I hated RNG perks in D1 mainly because of the constant updates that would occur for PvP balance issues. That being said, random perks should be available as mods and then simply disable mods in PvP. It eliminates the balance issue while still providing a grind for the hardcore. This would also create an additional value stream for rewards so that everything isn't so dependent on guns and gear. Now, endgame PvP should not disable the mods but any balance issues can still be addressed within the mod structure. Weapon balance would still be addressed on a type basis which keeps all parties happy.