Idea for new search tool

I have been thinking that it would be great to have a "Substitute work-out" search tool. When I don't like the scheduled work-out in a programme, I usually go to the "Workout videos" page and search for a similar video (in terms of type of training, length, equipment, calories burnt, etc.). Wouldn't it be amazing to have a search feature to do this automatically? Just put the video you want an alternative for, and the search engine will find another one (or more than one, ideally) with roughly the same features. Amazing, right? Just an idea :)