Mod is to big to cover for me, all the info is on their mod page over here:
https://thunderstore.io/c/lethal-company/p/PotatoePet/AdvancedCompany/

Their trailer:
https://www.youtube.com/watch?v=DHA0Y8P89Tg 

Their GitHub:

https://github.com/FluffyFishGames/AdvancedCompany

Disabled:

Vest issues with Fair Ai
Helmet Lamp: We have the flashlight slot

Headset: We have the walkie slot

Missile Launcher: Already is a flare gun, and causes audio glitches