[thejeff]

Possible, but unlikely. It's been suggested before and little interest was shown, by users or the devs.
Troops have a gold cost as well as a resource one, so such a setting would also have to prioritize spending gold as well.

If you have the gold, you can always queue up units well past the resource limit.

Your questions suggest to me you're focusing too heavily on troops and particularly indy troops, which are usually not as effective as national troops. I rarely recruit troops in more the 4-5 provinces a turn. Usually in forts. Sometimes indy archers or elite (sacred?) indy troops. Occasionally in late game I'll recruit low resource indies in mass to provide chaff to buff with Army of Lead/Fog Warriors etc.