Thanks for the ideas. There is a lot that can be done with releasing the trigger and I have to get to it (I have prototyped an air dash recoil by "respinning" the minigun but it was meh). Overheating is in a weird spot because it introduces warmups and cooldowns (no pun intended) that could encourage player to wait which is the opposite of current design. The last point is something I wanted to add for sure for burst damage.
Now that I think about it I can make complex overheat mechanics work through optional upgrades which would help me explain those mechanics.
It's not like ledge grab is required overall, it keeps horizontal momentum and it will have some interesting interactions (ie. swinging around into bullet form killing machine).