At the moment, if you want to make 10 rines from 10 rax you have to press A 10 times. Same deal if you want to morph a bunch of banelings, or warp in a dozen zealots. This is not terrible, I mean you may want to mix up your composition, making 5 marauders and 5 rines or 10 zeals and 2 stalkers, but I still feel there ought to be a choice here.
How about if you want your order to apply to all selected units/buildings, you just hold down ctrl or something? ctrl+a equals a marine queued on all selected barracks or all your lings turning into banelings? Or for that matter, a whole group of zeals morphing in rather than one at a time?
I feel this has been suggested before, in beta, but it isn't in the game and I don't see why not. Anyone have a clue?