I have to say, I think Polly is my favorite character so far - because you really took the idea of having a bombshell aboard and made her not only self-aware of the fact that she was a bombshell and famous in and of herself, but also took away the 'ice maiden' factor. To me, that nicely dramatically undercuts the fact that the bombshell character was included for those demographic reasons.
I can also picture Jolene Blalock as Polly. It's funny, I never liked much of the cast of ENT, but somehow I can see the working as you've redone the roles. Especially hellraiser Travis. Plus, somehow I can see Trip calling T'Pol 'Polly.'
I can't wait for the next installment.