Not sure why I was rejected. Thoughts?

I made an elements Icon pack for AE. The project is well organized. I even mimicked it exactly as the same layout as another icon pack that is being sold. Do they reject based more on the video preview or the project file? Suggestions would be greatly appreciated.

Here is the preview video:


Here are my thoughts:

One of the slides with animated icons was 2/3 empty. And the end is too simple. You can add some animation there too.

Hope that helps!

I don’t understand.
I see a very simple projects with very normal ideas already published, what makes those published and what makes others not?