Showing Posts instead of Showcases or Images in profile.

Why can one not show up his posts in their profile instead of first 4 last images?

This would give a much better overview of what a creator is doing. Showcases also only show some pictures. I still do not understand, what showcases are for. Maybe that’s my fault them.

The advantage of the posts overview is, that the viewer can click on it and see all other images of that series and react on them.