Sherdog is not the end-all/be-all of MMA sites. It just happens to be the one that has been around long enough. Getting too huge can be a pain to those who run a site and to those who frequent the forums.
Sure, fighter bios and fight info would be great, but I don't see how it is a must for this place to do well.
It doesn't matter if you agree or disagree
... As long as I don't bore you and I spark a moment of thought, my goal is achieved
Queng leon queng tigre ecu tacacut, queca pa? - Pampangan Mandarigma Motto