I don't know if this is already added to the game, but the option to add scars to characters/subjects? Especially on trans masculine characters/subjects who have top surgery scars.

Add a working bathroom/restroom near or next too the lockers and showers.

The idea is based on the machine in this cartoon: http://www.youtube.com/watch?v=isbzfRh4za8&t=4m11s

It works the exact same way, except it pumps out a guy's cum by
non-painfully (or painfully if you prefer) pounding on his underwear
bulge. The milkee's balls/bulge are grown/inflated via a serum, which
also works as an anesthetic to negate pain, allowing the milkee to feel
only pleasure from stimulation to the balls bulge. He's then strapped
down tightly to a table and gagged via whatever gag the milker prefers.
The pounding apparatus then pumps out the milkee's cum through forced
orgasms, deflating his balls/bulge back to its original size as it
drains him(it can even pump his cum out through the fabric of his undies
if desired). The milker can do as he wishes to the milkee while he's
being milked, such as teabagging him, face-sitting, talk dirty to him,
lick him, tickle him, play with his nipples, and so on and so forth. It
can be consensual, or non-con, you probably get the jist of it.

an aprils fool easter egg just for the heck of it. with signs saying things like: "orgasm is murder" or "unethical research should be banned"

The premise is simple: a simple game like Poker, or maybe Blackjack, or some other simple-to-implement / simple-to-play game where you can make bets. The in-game context would be you playing against other people who work at Rack Laboratories after the doors are locked. You pick a few fetishes, you assign which get employed with winning and those with losing (and maybe those involved with just playing; maybe the whole game is played with each participant under the influence of a vibrator! Or something) you both hop in your racks across from each other, and play! You get to enjoy watching the results.

Fun things to consider: Maybe the game is played PoV, giving you an intimate look at whatever Winning or Loosing looks like for your junk, while you click on in-game interactables (with your mind! Wom-wom-wom). Maybe the fetish involved will distract you or your opponent in some way -- that is, maybe the mouse becomes *really* jittery when you are under the influence of post-orgasm rubbing, or maybe you get to hear your opponent say 'Damnit I didn't mean to click that!' because they just climaxed mid-turn, adding to the strategy. Perhaps there could be achievements associated with it.

I have some advise the game seems to auto save everything (all the time) you might wana change it to have a manual save for insurance, and to make it less resource intensive it would help to change the unused particles.

Being deepthroated by a long tongue is one of my favorite fetishes. 

Ungulatr is the best artist for this fetish. 

that injects cum inside the characters ass or vagina doing infinite creampie

Basically, you have a system whereby you can put out ads for the cost of money. The more preferences you specify, the more it costs; maybe the first three cost some flat rate, but every one past that gradually costs more and more per preference. You' could spend more on the add to try to get more volunteers, and they'd be paid as well. But ... it would give the players another avenue to spend currency, give them subjects that enjoy the same things they do with a sense of determinism / less of a sense of RNG, and be contextually relevant to the game's world.