[NTJedi]

I believe most will agree that the time spent per turn depends on how many commanders, troops and territories are currently owned. Those like myself watch each battle where even more time is added. I watch the battles to study positions and commands for units plus to learn how opponents position their troops as well.

Also it depends on what expectations are set between the gamers... if everyone agrees a 15min limit then thats the rule to follow.
It would be a nice feature to see a time limit setting available for Dominions_3... something similar to Heroes_III would be perfect.