I would love some missions similar to Dead Effect 2 like:
1: Port into a specific smaller dungeon where you just have to survive for a period of time and mobs keep spawning in.
2: Port into a smaller dungeon where you just have to kill a specific number of mobs, or waves of mobs.
3: Port into longer dungeon where you fight through a ton of mobs (or run) and objective is to kill main boss at end.
4: Maybe a dungeon where you have to capture a certain point and then hold it for a period of time.
All those are simple to implement and if you are given the ability to pick a difficulty for each one, it lets you challenge yourself in whatever way you want. They don’t need to take more than 5-10 minutes each and are fun, simple mobbing dungeons for the most part. You could have a random purple reward with a chance for a legendary if you complete the hardest mission.
On top of those I love having (again, like Dead Effect 2) a variety of small missions you complete as you progress through the main game or side missions:
1: Kill a certain amount of a specific mob over a long period of time
2: Kill bosses with a specific weapon type (or badasses maybe) a certain amount of time
3: Open a certain amount of lockers/chests/ammo crates etc
4: Complete a certain amount of quests
These are just things that you can keep track of in your mission menu to see how close you are and when you complete one in game you could maybe have to talk to a certain person to get your reward (which could be anything) before it then opens up the next one in that line. Each difficulty could have there own missions and when you reset a difficulty it resets the missions.
Also, you could have specific missions with each different weapon type and when you complete it you get a blue/purple weapon of that type. If you complete enough before resetting your game maybe the last one gives a random legendary of that type.
Dead Effect 2 is a very basic game compared to Borderlands but it holds a lot of similarities and these little missions really add a lot to the game. Gearbox should look at what they did in that game as random missions and do similar things.
Not everyone wants to just to raid bosses, nor does everyone have friends to play with for raid boss gear, and some people just aren’t skilled enough to fight raid bosses solo. Having these kinds of things would really help these people out a lot as alternative ways to get gear or progress the higher difficulties.