Since the github 1.0, this has been my one-stop go-to for any sort of stat monkeying and rebalancing. It may not be as convenient as installing someone else's stat changes and forgetting about it, but nothing beats having essentially full access to increase or decrease stats as you personally please.
Each update has only added more options, and allows you to edit everything from guns to grenades to sentries, support backpacks, and the various offensive stratagems and their individual projectiles and subprojectiles.
Gun shoots too fast? Slow it down. Teleport backpack can't clear a hill? Increase the reach. Mech rockets too weak even though they can clearly fit way more warhead? Make them do what they ought to.
Being able to easily test and reset everything is fantastic, and really makes solo play a sandbox of novelty. It's also fascinating to see the exact numbers a lot of these weapons have.
While there are some small quirks like engine or game limitations on magazine size and whatnot or in what values can be accessed, or other stuff like how I'm not sure projectile VFX transfers when you swap what projectile a weapon fires, it does as it says and I've had no real issues with the mod itself.
Use responsibly.