A more extensive set of search option would be great.
The feature I use the most on the classic Movielens is the Advanced Search. The search toolbar that has been added here is easier to use then the Advanced Search, but it doesn't have as many options. I can no longer organize my searches by how well I rated them, only by how much movielens predicts that I will like them. I would recommend adding all the features that were in the old Advanced Search to the new Search Toolbar, and maybe even more.
Thanks for the feedback. I am closing this as a duplicate of http://movielens.uservoice.com/forums/238501-general/suggestions/5559818-don-t-simplify-the-search-function
Please do add your votes and/or comments there.