I honestly saw this coming when the show first premiered. I mean, Cleavland was "OK" as a supporting character in FG. On his own? Not so much.
Heck, I'm just kind of going to restate what everyone here has said: It's about time ALL of Seth McFarlane's shows need to end. They're basically beating a dead horse at this point in ANYTHING you do with any of his three shows. Sure, flanderization is common, and it happens to every show, comic, etc, but you know what? Family Guy (And by extension, The Cleavland Show) has to be one of (If not the biggest) case of flanderization I've ever seen. The characters have some sort of Jekyll/Mr. Hyde thing going on. I mean, really. Look at ANY season 1 or 2 episode. Now look at a current episode. The difference is HUGE!
Back to the main subject at hand: Cleveland show. My main issue with the show, like I said above, is that Cleveland works FINE as a supporting character. But as a lead in his own spinoff? I mean, sure he's had character development in the show, but... Enough to get his own spin off? And, yes, I know that most of the show even happening is because of Fox, but... still.
Other things I have issues with: The family. Oh my God, the family. They get on my nerves. So. Much. Donna is a basic expy of Lois, Rallo just seems like a remake of Stewie, and... I don't even know about Roberta. All episodes I've seen with her either have her going out and doing things with her rapper(?) boyfriend, or just being an annoying brat. I mean, I get teenage girls aren't always a ball of sunshine, but the way they have Roberta sometimes just... I don't know. It just rubs me the wrong way. She's obviously not an expy of anyone, I mean, Meg's the butt monkey and Haley's a rebellious young adult hippy. Roberta fits neither of these.
The neighbors also kind of get on my nerves, just not as much. The bear, I think his name's Tim? He had some funny moments, but besides that, I really don't remember too much about him. There's also the short guy, and I guess he's supposed to be, what, a frat boy bachelor? Who lives with his mom? Huh? How do you even work that together? It doesn't even work! The show's trying to make it seem like he's the "Quagmire" of the group, but... It just doesn't work! If anything he seems more like a Joe than anything!
Then, you have the redneck neighbors. These guys also constantly annoy me. The whole "Oh look at me Ima southern redneck stereotype!" Thing got old. Fast. The main guy, Lester, doesn't really bother me too much. Neither does his son. (I've seen 1 episode with him, so I can't really judge) My main issue is with Lester's wife. She is... Insulting. To put it nicely. Her only defining character traits are that she's overweight, and likes food. Seriously. Have any of the scenes we've seen with her gone without making at least one fat or food joke?
Overall, I think the show just has really poor character development and writing. Same goes for Family Guy. They're Bizaro versions of their original season 1 counterparts. Meg is abused way to much, Chris has the intelligence of a sponge, Brain has become a stuck up Holier than thou jerk, Lois has gone from caring and motherly to Peter's level!(Drtooth basically summed Peter up for me.) Stewie, however, has almost shifted character gears. He went form insane and world domination obsessed to a normal, standard jerk.
Overall: I'm happy, as mean as that sounds, that this is ending. It just frees more time up for Axe Cop or Bob's Burger's reruns.
(O_O I just looked at how long this is- Holy Cow)