What is that ONE mod you will never remove from Skyrim?

[invisibleboy666]

Underground bathhouse

 

cant live without this, if only for the awesome armour hidden

[Tuvalu]

Defeat. It's hit or miss on if it actually works most of the time, but when it does ?

 

Plenty of other good stuff already mentioned though. 

[HentaiGnome]

Unofficial Skyrim Patch by Arthmoor

 

EDIT: Just realized you meant from Loverslab, then I guess SexLab Framework by Ashal would be pretty much it for me. It's like.. the foundation for everything else lol.

[Distortedrealms]

Simple, Better Jumping! Seriously, could never go back from the sprint jump. But manipulator is the other one that would make game life difficult without.

[GregorSamsa]

Bodyslide?

 

And ... and fores sexy walks.

 

To move those sliders to shape a butt and then to place it in tamriel and follow them ... I don't know any other game where watching butts is such a satisfying task. 

[Tiruil]

Fnis seems to be the most important, but off of here the only other mod I can think of is Neovici's Oriental Dress Set off Nexus. Both of these are MISSION CRITICAL {AKA the two first go to mods to install on newmachines}