Alternative Start Mod (Live another life/ Live a deviant life)
Just so you don't have to go through all the vault and Sanctuary stuff over and over again. Preferrably with a live a deviant life alternative.
Will probably require something like SexLab and devious devices.
I really hope someone makes those for Fallout 4
Chain Beast powerarmor
Anyone remember the chain beast mod in Oblivion ? http://www.nexusmods...1&gid=101&pUp=1
Those "chain beasts" consisted of chains and fetters and would jump and knock down their unsuspecting victims (using stamina drain back then) in order to chain them up. Once chained, the character would be forced to crawl to a location and be exhibited there in different positions (provided she ever arrived there since pathfinding was hilariously bugged )
I think this could be done using spcial "powerarmor frames" since powerarmor does have its own animations - so enforcing a crawl for example should be possible without overwritung the player regular animations.
-> Spinoff: Rideable Ponygirl powerarmor
If it is possible to force a character or NPC into a chain beast powerarmor, it should also be posible to use powerarmor as some kind of ponygirl horse tack.
Make Love not War /Frenzy of a different kind
There are weapons/ffects that cause a berserker frenzy in characters when they are hit. Wouldn't it be nice if they would start having sex instead. There was a mod in Skyrim that altered the "calming" spells in that way, depending on the magnitude of the spell this could affect up to 9 chracters.
This could be an entertaining way of sneaking past those locations swarming with hostiles (it usually takes a lengthy firefight to get past them).
Not strictly adult: Elf Ears
Hey the FEV does all kinds of stuff, so why not some pretty elf girls
High Heel System
So that characters actually walk on their toes (and become taller) instead of the legs becoming shorter by the margin of the heels. I tink there was something like that in Skyrim called HDT Highheels System.