she looks more like a happy, naive cadet.
Bingo!
I was too lazy to write this 2 days ago, but apparently not only me have same associations. First version looks trickier, more "adult and mysterious” in general, and this... is something naively childish and cheerful, which ultimately spoils impression of this, as "fap material". And color... well, if it can be changed, then probably not so bad. Previous version (perhaps just because of combination of color and shadows), for some reason, looks neat, "smooth" and more "high quality". I don’t understand, I can’t name exact reason here, sharpness maybe, I don’t know
As for "boobs customization", consequences can be very unpleasant, because it was
not quite small 
, but combined share of naturalness and bulk/size (exact balance, catch of which far from characteristic to everyone), while customization will try to make it look "permissible" for any size. Believe me, not all projects have benefited from this. Option for the sake of option is more like a gimmick, in addition, it can create certain additional problems in both code (time, compatibility) and view, you can easily overdo with this without knowing of limit, which one here is: "better is often enemy of good enough".