Wow. I'm surprised. When i first started Angled Doom a few months ago i didn't imagined that people would enjoy it so much. I'm really flattered and this is the best reward i could ever want. Thank you guys for your feedback and interest! My Christmas is now complete!

So, let's answer!
@jablon1000
UAC carabine is pretty good at it but sometimes faster weapon will work better. For example i sometimes was in situation where i fight some cacos/pains on medium/long distance and chaingun waste a lot of ammo and carabine was too slow.
You are completely right, the UAC Rifle is stronger than both SMG and Chaingun (damage per bullet wise), but it's not so useful for crowd control. However, i'll give you a tip: i believe the answer for this problem lies in MAP31 (aka the secret level)...

Grenade Launcher feedback
These are very enlightening words. More range and better blast radius can be a good way to improve it and make if feel a little less than a bouncing rocket launcher. I'll work on it based on your feedback.
If you want add some new weapons you should consider integration a weapon wheel (or something similar) or some options to enable/disable weapons. I think py weapon wheel mod have template which you can use. I use this when mod have a lot of weapons, yeah it save my ass in combat.
I'm gonna check that weapon wheel mod and see if i can integrate that. That idea never crossed my mind, but sounds like a great addition.
@VecterStroke
I do have some suggestions for Angled Doom Plus:
Replace the revolver with a blaster pistol. similar to Quake 2(alt-fire is a charged shot)
Change plasma rifle alt fire to ricochet projectile similar to the ion ripper
Add a nailgun. (alt-fire is spread of nails)
Add an umaker similar to the one from the doom alpha
Include alternate sprites, such as a rifle skin from the doom alpha
Have the Mancubus arm do fire damage
These are good suggestions. I don't know about the Doom alpha sprites, mostly because of angled sprites availability of such weapons. I can't say i'll add all of these guns from your list, but that gives me a lot of good directions! Thank you very much!