I would like to tag or star my best photos so I can quickly access them or have others view them. There are times where you drive through a stream or get a stunning vista and it would be great to share. It's probably not a key component of mapping but I think it would highlight what has been done.
Perhaps limit users to tagging about 2% of their own content however allow users to tag as many other images as they like (within reason).
This would allow on your bio of your top pics along with the highest starred and would allow lists of top photos by country / state etc. Clearly it wont' be scientific, just a way to share some great images.
I don't want to include sequences, just the odd image here and there. Perhaps start slowly by allowing you to tag your own. Any thoughts?