Tower of succ is a great name XD. Diff sized balls could be a thing. Maybe hyper balls too. And glad to hear you got back into game-making! It's hard but rewarding. And def no shame! At least, not from me XD.
Yay, senpai is considering my suggestion! xD
but, yeah, I'm pretty sure that different ball sizes wouldn't just appeal to hyper fans; given how androgynous the PC is, someone's bound to like having a character with a small sack to go with a mini shlong. (now that I checked what the small option looks like, it does seem rather odd having balls hanging that low with a micropeen >.>)