Whats a series that you enjoy but at the same time think is average?

Usually I have a few series I personally enjoy but am forced to admit that from an objective lens are merely adequate since they borrow heavily from other stories, have merely decent art, have likable but not extraordinary character, etc.

An example of this for me would be Doron Dororon. I enjoy it but at the same time I don't see it breaking any new ground nor do I see it perfecting what came before. At the same time though I find it to be a nice read when I want something simple to digest where, I dont have to think about the themes or motivations on a much deeper level then "Friendship Good" and "Monster eating people bad".

Whats a series you read/enjoy that would be considered by most to be 6.5/10 kind of material?