Thank you for playing and for your feedback!
I think having a body part label for each trait would've helped with knowing which trait it will replace.
As for the mole, since the mole eyes provide a liiiittle bit of eyesight, they're marked as +. I think switching the +/- to display relative +/- compared to the species' existing traits instead of absolute +/- would help the player understand if a trait would improve or worsen that stat compared to what the species already has.