Not all hats have descriptions or known artists, and I can see problems with the "date attained". Seems a bit like extra work for no particular reason, although the favouriting could be helpful I suppose. Then again, if you need to reorganize your inventory, you have too many hats.

http://wiki.teamfortress.com/w/images/thumb/7/75/TPH_Soldier.png/386px-TPH_Soldier.png (Unsupported image host)