ability to use filter variances and tags when searching previously viewed
ability to search my viewed videos by the filter variances available for standard video/performer look ups and or tagged statements in previously viewed videos. i.e. it was a video with a red head, xx cupsize. if one were to search for that example on the regular website 10's of thousands of results would show up. where if it was a video one had seen already but was looking for it again it would really narrow the scope.
another addition that may be interesting is the ability to sort by most viewed by individual user. i.e. a video one has seen multiple times and wants to view again would be easily found.