Also: the legendary prefix that gives your weapon fire damage is super ridiculous.
I'm killing supermutants with my fullauto 10 mm incendiary Pistol.
You wish. Fire damage does not stack in this game, making the Ashmaker minigun a waste of inventory space. You generally want a 2-shot variant for all guns if you want to keep it "normal", or the super overpowered "wounding" variant if you want to yell "lol mum i rock lol" all the time, because THAT one stacks. Assplosive is not my cup of tea, since it throws stuff around and creates unwanted collaterals.
And why anyone should use Minigun?
Thanks to the damage resistance system, normal miniguns are only useful in NPC hands, who have no problem spending 2000 bullets on one enemy. So the only useful variants are those that exploit the high rof by adding something with every shot. A wounding minigun adds 25 armor bypassing dmg with EACH shot. Go figure how much fun I had when I met an enemy wielding it.
Generally most of the weapons are not well designed regarding game mechanics, similar to FNV's useless automatic weapons. Lack of communication between teams I guess.
Take the plasma weapons for example: they are supposed to be the endgame energy weapons but they suck donkey balls. Since their damage is divided between ballistic and energy dmg, both parts are rolled against the enemy's DR, making them loose much of their potential compared to an upgraded automatic laser rifle. THOSE things tear through enemies like a hot knife through butter, IF you use one with unlimited ammo capacity.
After a ridiculous engagement with super mutants that all came equipped with rocket launcher
Yup, that sounds like the typical "defend coastal cottage" bullshit. Fast travel in and end up having 4 of those buggers standing behind you. They blew up mah powah armoah faster than I could sprint away. Turrets are instakilled and only serve as sinks for repair materials. Some settlements are just not worth the hassle.
Sure, let's ignore the factory fortress to the east and squat in that little shithole here in clear view of a Mudcrab queen instead.