We have plans to revamp the full search page, including sorting and filtering functionality seen on our regular browse page, but that will come at another time.
Well, there are plans to overhaul the system, maybe it even gets usefull for finding stuff. I am sceptical. For finding things, the developers have to release in a manner that is actually searchable. With tags, everyone has different opinions how to apply them and what they mean. So filtering with tags will be a case of your mileage will vary.