I haven't really chimed in but I think with Cover Girl being this year's sponor....they were looking for a "cover girl" type and I think Naima was the "best of both worlds" for lack of a better phrase.
I have no opinion on this season, but I do hope it gets better next season, I just got the feeling that this season was all about Tyra (and she really does need to tone down the hair....its getting WAY too orange)