Thanks for sharing your take on Wes Anderson, I enjoyed reading your post.
If I understand correctly, your main problem with Anderson is that you think there's not enough substance behind his style. You can make this claim for other directors as well - Jim Jarmusch comes to mind, for example. However, I think in their cases, style is substance. You can enjoy Anderson's films as popcorn movies and they work fine, they don't need to be complex or overly original for that. I think you can also look at the way his films depict the world and which thoughts might be behind this depiction, and for this his style is key.