How about some Masteries tailored to 2v2?
Like many other players, I witnessed the game-breaking pain train that was rework
but I loved the concept. I've always wished for melee champs capable of playing 2v2 bot lane with a support.
I think it would be highly beneficial to create more masteries than one tank Keystone in Resolve. Masteries geared toward melee bot laners would give more opportunities to balance the champs own abilities to avoid the Mordekaiser situation where the champ is either trash in 2v2 or trash everywhere else.
A focus on enabling melee champs to farm more easily, such as granting bonus attack range toward minions, or reducing damage from ranged attacks for ~1.25 seconds after killing a minion om a 5 second cooldown would do this job nicely. It would open up opportunities for melee champs to not be 100% zoned off farming when not 100% dominating the lane.