You have a nice list of filters there, and I would like to be able to apply them in combination, e.g. C++ and Image. To do this now I have to build up a third filter that is the concatenation of the two.
It would be much nicer if I could select multiple filters from the list and let you concatenate them! All you would have to do is allow us to check multiple items in the list that comes up when you click the blue arrow...