Hey, if it's justified by the plot (integrally, I mean, not some thinly-veiled excuse to show knockers
), then that's cool. Sure, sometimes a game just calls for a vixen.
Still, though, at least be aware that you're walking a fine line with something so blatant. If people won't look past initial impressions, then it really doesn't matter how well you've pulled it off later on.
Looks intriguing, though. Keeps us posted on your progress.