You can always agree on a shorter time in a season game, especially since the limit is the same for both players ;)
On Jebus Cross you need 2 minutes, on Balance -1 min.
I'm not joking.
Both you and your opponent are on equal footing.
Of course, I agree that on Jebus Cross, to play properly, you need at least 6-8 minutes. BUT! As Preds stated today in a nearby thread, Jebus Cross is grinding. It's clear why...
And imagine, 10 minutes per turn, time doesn't run during battles, but on average you add just as much... so a turn is 20 minutes. Your opponent has the same. So 1 day = 40 minutes. One week = 4.5 hours, a game lasts at least 2 weeks = 9 hours of your life wasted on what?
What a waste of time...