That is an interesting thought that the company wouldn't be as popular, because I have the same opinion too. But think aswell, this is the company that made Spyro :P I think she would have been an interesting protagonist though, because I don't think Insomniac would have made her the typical "sexy female" character that most companies seem to like (take Bayonetta for example :O). Because Insomniac are that awesome!
Did you hear that when the PS2 was first announced, the Insomniac devs thought it was going to be really powerful and put like 100 polygons into each blade of grass and it crashed after about a square foot of it. Lol :P