At this time we have the ability to queue up troops based on how many factories/barracks we have available. but that makes little sense to me. if we have for example 4 factories why is it we get 4 build queues and not able to build 4 lots of units at once?
this will change the game a little because people can counterattack faster, making the game more fun.
if not making the different factories build all at once then have a bonus. for each factory you have you get 1% of the total build time. then you get 1% taken of build time per level. so if all 4 factories are level 11 that is 44% of the total build time for units, this gives a great incentive to upgrade these buildings