Army reinforcement bug/missing feature - units are constructed by distant factories causing them to arrive late or die
When you form an army and request units the buildings which construct them seem to be chosen randomly. This makes the reinforce army feature nearly useless if you have different armies in different parts of the map. Units will be constructed at a building directly behind one army and then proceed to move all the way across the map to reinforce one of the other armies in play. In traversing the map they will frequently be killed or arrive too late to be of help.
I have stopped using the army reinforcement mechanic because of this. I work around it by setting rally points from nearby factories and then manually adding units to my armies as they are produced.
To solve this there needs to be a way to choose which factories will reinforce which armies. Perhaps when a factory is selected right clicking on an army will cause that factory to only reinforce that army. This would be simple, intuitive, and would not change the current mechanic if the user did not choose a specific army for a factory to rally to.