Cylindrical, Forked, Flat etc. Just a bunch of different options for tongues.

if ferals will be add in the future, it would be grat to create your own character, also it would be easy cuz it would be only capable of doing oral or sex jobs.

I thought of characters with more than 2 arms and heads. Being or not present at the same time. Be patient or player.

I'm sure that these things are likely planned for future updates, however I wanted to post this here just to be thourough. 

I would like to see body fluids be more persistent and impressive later in the development. 

Examples of this would be:

If your character ejaculates onto another characrer, the cum would stick to wherever it landed and only disappear after showering or being licked off. Maybe even drying over time. The spots where the cum stuck to a character could even drip slowly as an added affect. 

Also things like cum coming out of a character's nose during a deepthroat or rushing out of orifices after pulling out would do wonders for immersion.

Other fluids like sweat, saliva, female ejaculate, water from the shower, lube, and urine (if thats your thing), could all have similar affects and make the characters look wet. 

Perhaps a slider could adjust the quality of fluid physics to accommodate those with lower end computers.

I see a lot of potential fun to be had with body fluids in general in this game. 

The ability to input an exported customized character as a test subject in the game.

Similar to the mechanic in Team Amorous's Fursona Maker, you could draw custom markings right onto your character without having to make a separate file in Photoshop to then import into R2CK.  This would save time, is foolproof, and it would be much more intuitive.  Plus, if you make a mistake, there's always the undo button.  Here's a screenshot for those who want to get a better idea of what I mean... 

I do realize it is possible to play pretend and imagine that subjects actually taste and swallow cum when you suck them off and then kiss them immediately after they finish in your mouth, but it would be great if it was an actual game feature. Cum-string between your and subject's lips after you kiss and back away, facial animations to express whether they like it or not and implementation of the existing mood/preference system to decide whether they swallow it or spit it out. 

For instance, if the subject does not enjoy you trying to feed them cum, are they intimidated or submissive enough to swallow it anyway? Or if they do enjoy it, are they dominant/angry enough to spit it out regardless just to turn this into a confrontation? Does friendliness come into play at all?

Do they swallow it subtly, squirming and displeased as they go, or do they eat it loudly, empasizing each their motion and licking their lips for the few remaining drops, begging for more?

Do they give a damn whose cum they are about to swallow, and did they even see whose cum it is? 

That kinda thing.

I'm coming in off of only having played Rack 1, so this may have been done already, but there's something I have to request relating to sound design in Rack 2.

Oil the sex machines.

The two sex machines in Rack 1, while visually excellent, are incredibly loud. Especially the dildo mount. While some mechanical noises are to be expected, and could even be considered necessary for immersion, the levels of sound produced are absurd, drowning out almost everything else and, frankly, are a major turn-off. Every time I use them, I have to mute the game sound completely in order to enjoy the scene, and I'm sure that the sound of crusty gears grinding against each other isn't irritating to me alone.

So please, for the love of all that is erotic, make the sex machine sfx in Rack 2 subtle. Or, at the very least, allow us to mute the machine sfx separately.

Thank you.