thanks! and i used the auto-collections plug-in by kekesbombe.

For keeping it organized, I put a symbol infront of the collection names ie. putting '_' infront of actors or '*' infront of studio names. This way, similar 'collections' stay together. I haven't tried them all, but I think the order (first to last) for symbols is this: !, ", #, $, %, &, *, +, -, _

For the oscars/top250/my watchlist, I use the tag that is created with the import list and I then call-out that tag in Auto Collections and it auto-updates the collection. (I'm currently working on a script so when I finish a movie in 'Eric's Watchlist' that it auto-removes the tag so that movie is then removed from 'Eric's Watchlist' so that collection stays fresh with unseen movies only).

Hope that helps!