At times the full art wraps around both the front and back covers: post #1345023
Good point. But I think that the vast majority of the images tagged cover_page are front covers, making this tag a bit redundant. In addition to this alias, I would like to add this: Implicate back_cover -> cover_page
This way, cover_page would include all cover pages, whether front or back, and back_cover could be used to find back covers specifically. Cover_page -back_cover could be used to find front covers specifically, if necessary.
Edit: Oh, you edited your post while I was typing. Sneaky.
Daijin said: And some of the uploads feature the art of both covers in a single image: post #1337744
If we want a way of finding posts that have both the front and back cover included, I think a new tag would be better than using using front_cover back_cover or something. Most front covers are only tagged as cover_page, making it impossible to find them like that whether we do this alias or not.