Make a way to Rank your Entire List
The one feature that is lacking for me, is an easy way to rank the entirety of my list. Perhaps it would be a hybrid of something similar to Flickchart (comparing 2 films at a time) and being about to manually rank them myself. (Or maybe the option to rank within each year, genre, etc.)
I love that I has this huge master list of all the movies I've seen, but I wish there was a streamlined way to rank them (as opposed to doing it manually over 2500 movies).