Watched games is great, one click and I can see the games I want.
How about a second click option once you view the list. These would be folders we could create. I've got a few games at the first click, but next near the top I could click into folders I've named and organized.
I would name one folder "winning games" perhaps. Another might be blunders.
I might name one "My near done games" and yet another "Still in Book"
Anyone could organize the games they 'watch' any way you want, and the way it is stays the same if you decide on to use the folders option at all.