Other sites allows to watch without the need of downloading, if you will have that kind of feature I think you'll get more visitors.
I don't download movies now because I'm afraid of those attachments that it possible had.
Which will be visited by more people if aside from the download features you also add the videostreaming functions, most of the time viewers loves to watch from the direct link instead of downloading the movies. You can add this up for more successful journey to your website, good luck to you.
I had this idea on my mind. Thanks for your good bits of advice.