An icon connected to our barracks that has a preloaded army. I. E. Farming army (barch, bam, bag, or whatever) war army (gowipe, gowiwi). So all we have to do is click on the icon and our troops will start to be made then go to war or raid.
I think this would be tough, let say war army GoWiPe, some players would prefer to take 2 Golems and some would prefer 3. So how would supercell decide what number of composition is perfect for the player (Yes supercell can make a default numbers) but if players need to tweek the army numbers then there is no point. It would hardly take some seconds to tell your Barracks what army composition you need. And one more thing, in the GoWiPe attack as well some players include archers or barb to lure the clan army.