When shooting enemies (and ideally structures/objects too), show damage amount indicators on hits like RPGs or shooters such as Borderlands. I figure it would look like the floating text you see when you take items out of chests and such. Even better if it could be colored or something but just being able to see the raw damage per shot that I'm doing would be great. Also it would be cool if turrets could display this numbers too, ideally with a mod setting for when it would get overwhelming late game. Seeing biter/enemy faction indicators wouldn't be useful but isn't worth worrying about if it's a side effect.
I play with a lot of military mods and specifically had this idea when I was debating between using Rampant Arsenal's minigun and Bob Warfare's rifle so mod compatibility would be important if possible.
Pic for Borderlands for and extreme example:
