Could you add a third selection filter box to the right of ‘Type & Genres,’ labeled ‘Decade’? This will make large lists more manageable, and allow us to quickly filter by criteria like ‘movie + musical + 1940s,’ just like we can when using the normal search, but applied to specific lists. For us VIPs, it also makes it easy to check big lists from others or curated lists, set a filter, and then use ‘Manage > Copy to New List,’ allowing us to manage that new list on our own accounts with our own sorting method.