What about Lizard men though? They're in the SRD, and they're definately more lizard like than man like.
I understand your arguement. However, it stems from a lot of your standard definition of fantasy (which is perfectly fine, it's your opinion). However, why isn't there a place in the world for these people? Why is it an issue that they share traits with cats?
Personaly, I wanted something different than the "It's a human with hair, whiskers, and cat eyes" that many people suggest for the cat race. I feel they fit well into the enviroment that they are in. Are they curious and social? Yes. But so are Gnomes, and some also describe Halflings like that too. As a newer race (And I mean that in terms of how long as an established race in general, not as a "new proposal"), they don't have as much established culture, and there is an abundance of it to grab.
Basicly, I wanted something different. Something that makes them unique in the world. If they're going to be simply only "touch of cat" why not play an elf (Which is actualy fairly close as built.)? The Katara are different, unique in a way. And yes, their newness might dominate for a bit, I don't think it will much more than any other new culture will. Look in the tavern now. Most of the current conversation has been dominated by people asking about other's backgrounds (at least the new players in the tavern). So a new race comes in, it won't be much different. And after a while, it settles down.
I disagree with your position. But I do respect your position, and understand where you are coming from.