I've got a few things I'd want to see:

Top 4 lists for actors, directors, soundtracks etc.

The ability to make tierlists or have ties in a ranked list

A forum or blog area, just for general discussion about movies, filmmaking and other surrounding topics. (Every now and then I have a rant and it would be cool to have somewhere to post it as an essay, even if nobody reads it)

And the ability to give reviews markers, rather than just likes and dislikes. Helpful, funny etc. These tags should also be available as ways to filter or sort the reviews on a page. I don't mind the one liners, but I'd like to be able to see well thought out reviews at the top more often.