I really enjoy big cumshots so I would like to be able to set the amout of cum my character unloads to higher than average (maybe related to the size of the balls?). What also would be nice is that the longer the session takes between climaxing, the bigger the load will be.

There should be an option so a character's penis can be uncut. Also, any kind of foreskin play would be great ie. tugging, pulling, fingering etc.

the idea is a cross between regular oviposition, and my sperm replacement idea, the idea is that a monster(whether you develop the creature, it's a previously undiscovered species of mollusk, insect, etc, or it's an alien)the creature will come up to a male subject, extend and insert it's ovipositor through the penis, coating the entire ejaculatory duct with fluid that alters the composition of the flesh to make it stretchy , and into the testes, where it pumps the same fluid into the organs that alters composition(to make the testicles stretchy)included with the fluid is a bacteria the binds itself to the host spermatogonia(thats what make the sperm)and in short swaps out the hosts genetic information with whatever genetic information this creature happens to carry, after that, the creature will draw eggs(either the size of pollen of the size of chicken eggs)into the hosts drastically altered seminiferous tubules where the eggs can be fertilized and later be ejaculated out(or pushed out in chicken egg sized lumps)

Pawjobs, paw licking/sucking, and possibly some tickling.
if possible, maybe add optional plantigrade shaped paws, since i know some may prefer them over digitigrade paws.

The option to have some more capabilities for cbt or ballbusting, ranging from incredibly mild like light taps to the balls or ranging through to more extreme things for those that are into that

Title says

Urethral sounds, penis plugs, catheter tubes.

both can be for male or female, but male is more common

The idea of feeding a subject their own cum every time they orgasm, such as a milker with a tube connected to a gag in the mouth of a subject.

The chairs should lower to or near the floor when during self pleasure.

For 2 reasons;

1. So that the subject can see what you're doing, though this is superficial until voyeurism is coded.
2. And right now, the only way to gave a subject a facial is to ride their dick while you have a dick of your own that's been customized to not veer off and point in the wrong direction.