nipple size has sizes, plus inverted -- a character could have large, inverted nipples
This one I actually concede. There was a suggestion made just recently to spit up into nipple appearance though, which would let you specify large, inverted nipples.
amputations has mild to extreme, plus gender nullified -- someone could have moderate/extreme amputations (limbs missing, etc) and be gender nullified
Someone could, but the description for gender nullified is pretty clear it's only gender-pieces missing. If you have more than that, you pick something that isn't that, so moderate or extreme.
piercings has mild to extreme, plus sexual -- same thing again.
Yes, someone could, but the sexual one here is an --- exclusive --- special case. It's saying only having sexual piercings, e.g otherwise completely discrete. It is a form of mild. Anything more extreme goes to moderate or extreme.
post perspective has first, second, and third person -- in my own case, I use second or third, depending on the roleplay. (Not interchangeably in the same roleplay, mind!)
Will be handled by desired traits per RP.
genital type -- some fantasy dicks can be spined and knotted and flared.
Use hybrid or other. Extreme unique things are not handled by categories by design --- you're not meant to pick whatever is most useful to you, but what is most useful to everyone else viewing your profile who don't care you're a cat/lion/tiger/alien hybrid, or whatever. You can also just pick whichever one it most resembles if the hybridization is minor.
There are some pretty significant problems with using multi-select for traits and categories:
- SEVERELY complicate preferences, comparisons, and searching
How do I set a preference for just feline genitalia? What about both feline and human? What about human, if only there isn't feline? This adds a lot of complexity to this system for way too little pay off, imo.
- Allow hub profiles to basically select everything and ruin the profile system
Great! Now I can select every possible gender I want to play and every possible configuration of every trait so I can return more on searches! Awesome. Except now no one reading my profile has a blind clue what the profile is for or what it is intended to do, it's just a vague combination of parts. There's no real character anymore.
If we made it specific to just a few traits, then we run into other issues, like consistency. We have enough trouble getting people to use preferences, categories, etc. meaningfully as it is. Now some of them will --- arbitrarily, really --- let you select multiple ontop of that? This is another case where the complexity-add is not worth the benefit-add, imo.