Heya Fork, Bustr (and everyone else),
I have participated in some pretty fun scenarios where the numbers were set and for some the appeal of a more balanced choice was greater. I think this also would be an opportuninty for what some have been asking for in the shape of strategic strikes of factories, as an added game feature. Of course we are not talking of MA but scenarios and special arena setups.
I would also, suggest to add a time limit feature as well. For example: Max # plane ID, for # of mins. This would begin a countdown after the max number was reached that would close the hangar option for that plane ID until time had elapsed or reset by repair of object or CM control.