What were people's opinion on the cats in general? I feel like they may work better as side characters. Rowl had good scenes, but I would suspect that his ego would be a bit much after a while.
I like them, Rowl constantly saying people were 'almost competent' got old pretty quick. He says it about everything people do that isn't just terrible, and it got really repetitive. I feel like Jim is going to improve on this viewpoint the most though as he continues through the series. It's a 100% new approach to a new character type, and he's doing an amazing job with it but I personally feel like there is a lot that could be improved. Cats are extremely clever, cats also have a ton of pride and I would like to see Rowl fall off a chair and then huffily act like it didn't happen.
If you've ever had a cat you know that they feel some form of embarrassment. It's weird to think of an animal having that capacity, but watch one stretch and fall off a couch and try to tell me that them furiously cleaning themselves and then running away and hiding for an hour beffore coming back to get pets and try to tell me that isn't embarrassment.
tl;dr, The cats were fun (And I liked them as they were) but there is tons of room for improvement (That I think would fill them out better as viewpoint characters).