I actually really enjoy this idea and hope they incorporate some of these themes into the next season of content. I feel like there are 3 “sets” that could be implemented. Each with their own thing obviously
General Set: These are things that can benefit all VHs. Stuff like bullet bounce back or absorbing ammo. Or the set has a % chance of triggering certain effects (be them OP or wacky like Claptraps bouncy ability)
Specific VH Sets: These sets are specifically for the VH wearing them. I feel it would be a great addition to get into more of the lore of the character with new abilities that trigger. Zane can have a clone pop up and backstab enemies at random times throughout the fight. Moze can have backup ordinance target enemies around her.
Content /Raid Sets: This type of gear would ONLY be for the content they are introduced in. For example gear that only works in the Guardian Takedown or Maliwan Takedown. I feel this would work because people are going to cry balance and cry that there are too many sets. This alleviates that because the min/max people can become super OP in certain content without it affecting the whole game while the people that hate farming don’t even need to worry about this gear at all. So you would have your general gear that you always wear but when you want to group up with friends, or randoms, you can put on your “Raid Set” and kick some raid ass! The cosmetic department could also create some interesting “Raid Sets” that make us look different for an even more incentive to want to get the gear while we are doing Takedowns or whatever End Game Gearbox is creating.