On this subject, I've always said a "handful" is ideal!
I agree that we need variety in our champions. That being said, I'm not sure it's fair to say that the individuality of our female champions are totally hampered by their feminine endowments. I'd say Miss Fortune has a really unique flavor compared to, say, Sona, for example.
But I will concede, personally I do want more champions that are not "standard humans" in their anatomy, nor idealized in their proportions. I think we can expect some more monster/ creature/ oddball champs in the future, and hopefully some will be female! Personally, I'd like an old witch character. :P She would definitely not be boob-centric.
Thanks for all your comments, it's awesome to see people passionate about our character designs!
What if Urf were female? You don't know. Could be.