2nd Crusade

No, of course not, what nonsense is that? Even if you play quickly, there will still be battles with slow units where you'll spend more than a minute maneuvering them – that's one thing. And secondly, with 4 Soda minutes, you can take a little time in battle to think about your next move...

Taking time in battle to think about your next move??? I'm not laughing or joking, but it suddenly becomes clear to me why the enemy spends 5-7 minutes kicking around 50-99 skeletons...
Personally, I think 4 minutes of Soda is too little, but 6+4+1 is just right.
Here's my reasoning:
Firstly, if you lose 1-2 gnolls, you agree to auto-combat instead of wasting time maneuvering, thinking, and scratching your head about what to do next? And if morale is also low, you can spend the whole 5 minutes doing that. That's 2 gnolls, damn it! The opponent will wait. 3-4-5 battles * 3 days = -1 hour of your life.
Secondly, there won't be any temptation to "chase zombies with a ballista," except perhaps as a last action – you can take your time then, as the turn won't be skipped until you're done.
Thirdly, if a pack of fey wants to run away, you can let them. 150 experience is nice, but time is money.
Fourthly, it will eliminate the habit of "thinking" when all the heroes have already used all their abilities and you have 370 gold left. Think, but the timer is ticking.
And finally: "Time limit criterion: no less than 4 minutes and no more than 10 minutes. If you absolutely want a chess timer, it should be adequate to the 4-10 minute range without extra time in battle." I always play by the rules and don't rush the opponent, because it's not polite – everyone is different.
If Roger DAltavilla says that "this is too much," no problem) I'll agree to the minimum acceptable 4 minutes of Soda :)