As long as it remains a possibility rather than a required path, I'll be happy with the game.
I'm largely indifferent to the bimbo attitude, but it can be a fun character type to play every now and then. However, the big boobed, overly curvy bimbo look is a major turnoff for me. I like the outfits that usually come with the bimbo transformation, but don't much care for what's in those outfits. Unfortunately, the look and the attitude are a package deal more often than not. If I'm going to play a bimbo character, I want her to be a slender, small breasted woman with just enough curves to show that she's a woman.
If I'm forced to go the full bimbo route, meaning both the mental and physical transformations, I'll be done with the game because it will become a game that I cannot enjoy playing.