You should think about project owner as of your client. Do you expect your client to improve the logo he gets from you? I guess not.

My suggesstion: Try to contribute to Task requests and to small projects that have no or very old logos.
This is a new, big project with good logo. Thats why we cant approve your work. Its good, but doesnt help the project
And thats the point of Utopian. To help them