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Start game
Load Game
Hit Escape
Find the "Open Game Files" Hexagonal icon and click it
Return game to Main Menu to prevent save file conflicts
Open savedata folder
Open yourcharacter.rackCharacterData with any text editor
Find the following lines of code
<cumVolume>1</cumVolume>
<cumSpurtStrength>1</cumSpurtStrength>
<cumSpurtFrequency>1</cumSpurtFrequency>
Edit those numbers. (But keep it them all under 5 at first until you're sure your computer can handle that much cum.)
Reload the save file in question.
Test to see if your character is producing the desired amount of cum.
Return to step 5 if not, otherwise, have fun.
Start game, load save file, hit escape, and then open the game's data folder by pressing the wrench and hammer hexagon next to the logo. Once you have the data folder open, exit Rack 2 or at least return to main menu before making any edit to your save files, this will prevent the game from undoing any edits you make to them, and prevent saving conflicts in general.
The files you want should be in savedata (or characters, if you want to edit exported players and favored subjects, volunteers and clients)
If you are editing your player character, the file you want is in savedata, and named "(your character name here).rackCharacterData", you want to open that with any basic text editor. Though I use Notepad++.
Ctrl+F and look for "penis". What you're looking for is in this area of the file.

A value of 1 is the highest the in-game editor is allowed to go. But the game won't check to see if they've been exceeded until you try to edit your character in the shower.
Crowded Penis???
Well, I did post a dick pic, I figured being a jerk about it was a bit too much.
Most of this can already be done.

Before the most resent update, my character a had an orange-grape striped neon cock. Though, it's a toggle and not a slider, and all cum currently just solid white.
Hm...

Not going to lie, I see this suggestion as problematic...
All kidding aside, I look forward to the day to when I can explicitly exhibit myself to my digital coworkers.
And to random digital pedestrians wondering around the red light district.
When you know how the save files work, there is no such thing as a max size.

The only way that R2CK would ever end up on Steam is if Fek stripped out all the sex, nudity and science, and re-purposed it as a 3D lay figure program that allowed users to create and pose their custom furry OCs for the purpose of referencing them in while drawing on art tablets.
Oh shit, you know what? I would probably acutally buy that off Steam.
I'm not going to question how you know that last part, but I too would like a spiral dick.
Customer support service by UserEcho
Blood shouldn't be used as a lube, it coagulates once outside of the body as it attempts to turn into a scab.
Also, I don't think blood alone qualifies something as gore. I don't think it qualifies as gore until you come across something that be used in an improvised anatomy lesson.
That being said, I hope isn't off the table entirely. Can't have hymen play without blood.
Are hymens suggested yet? I'm a suggest that.