+4
I'm all for categories that offer a nice balance of structure but flexibility.
For example, watching films from the same actor/director/year/decade/country/language.
Once you get too specific, you start to run into the issue of lack of availability or not having a choice of first-time watches.
I also think some past "single serve" regular categories could be expanded, like watching 10 movies directed by women, 10 feature film debuts, or 10 movies made for less than $1 million.