Just want to talk a bit about Mules, and how people use them. They get little love generally, overshadowed as they are by the main characters.
For me I have 2 Main Mules:
Papa Bear (OP8, accompanied my Zer0)
Papa Bear 2.0 (31, accompanies my Gaige)
Both are Salvador, both generally wear Vault Hunters Relic and Hoarder COMs. I play in 2 player, and they stand idly by while I run my main. They are a repository for unused gear at or above level that I may want to use on my main. They are also useful for farming quest rewards and fast travelling (since they pretty much stay there).
I use Papa Bear (who is maxed on all currencies) to buy and drop weapons, as well as farm Eridium and $ for my Gaige. Papa Bear 2.0 hasn’t yet maxed on anything, though he has all backpack slots unlocked.
Additionally I have a secondary mule for every 10 levels or so, and one for each OP level. They are my equipment storage.
I love 2 player because drop and spawn rates are a bit better, and enemies are a tad harder. I view the ammo regen from Hoarder as my trade off for making the game a bit harder.