5-10-15 minutes minus 2 game turns equals 3-8-13 - that's about 3 minutes for a battle on a not-so-fast setting... I don't think there will be any precedent...
I myself am against long turns... BUT how many of you are there, whose opinion you are defending?
Vuzzza is absolutely right!!! If you're good at Heroes, you'll do in one minute what others can't do in 10 minutes;)