There are some things that make it watchable.
1. Cleveland is the star and not a character voiced by Seth
2. Tim the bear is voiced by Seth but he is a supporting character and doesn't upstage him
3. Donna isn't a ho like Lois and Francine
4. Rallo is 5 and people can understand him and he isn't gay
5. There is no beastiality
That's all I can think of