drag to re order troops generating in barracks

Kinda had an idea today I thought might be cool. Usually I like to que up 10 or so giants and back fill the barrack with goblins so when the giants are done being produced it will spit out those goblins. After I attack some one I usually have a few goblins left generating in that barrack and I got hit that minus button to stop them from being created so I can que up ten more giants first then I que up more goblins after and I do this quite a bit and wish I could just press and hold the troops to drag them and reorder them in priority of which I want to generate first instead of constantly hitting that minus button to un que them just to get ten giants going and re select goblins to gen afterwards. It seemed like a plausible idea so I thought I'd share either way awesome game loving the Halloween update rock on!

this could also work for spell factory maybe?