what i would like to see in place of production is more cards that let you personalize your divisions,.. maybe a card you could play, like extra ammunition,
'load up' play a card for free tell your soldiers to strip non essential gear and grab and extra case of ammo and food.. would do something like increase a units supply capacity, but lower combat effectiveness and speed(or stats change),......
or another card, 'light forces', order your troops to abandoned nonessential equipment and supplies, consequence soldiers have less supply and readiness and combat power(or stats change) but gain more action points or speed, and lower transport costs.....
or a card for fighter units or bomber units to determine which doctrine the use maybe a card for bombers,
'bug out' at the first sight of hostile danger your bomber pilots bravely run away away... bravely run away... increases chance of bomber attacks RTB, especially during engagements, but lowers their losses in combat the list goes on the possibilities are endless
quiet frankly the AT production system is a cruel joke, can order your factories to switch between infantry and bomber production like a light switch, maybe be nicer to play cards or spend pp that puts special request to HQ for specific unit reinforcement types, maybe theirs a card that increases the chance of you getting heavy tank unit as opposed to a light if you pay, or maybe a card that might get you an experimental tank bttln, but would increase the chance of you getting those type tanks earlier if you request it, especially so if the experimental unit gets X number of exp points before date XX
now if you were to somehow find the resources to make this an all out world wide game, then i could see production being used, but the system should be significantly more limited in what you can produce by factory tooling time, realistic research, political pressures and or resources
Just want to throw in here that the beautiful thing about AT was it's flexibility...yes, in the standard game a production city could produce anything at the flip of a switch, but you could always edit it so that a city could only produce a certain thing, like tanks, etc.