3 seems fine. The balancing was tied into the number of deaths so more players will have more power to do things but fewer retries and, while 1 would be brutal or impossible, 2 would make it harder to complete certain actions but you’d have the revives to make a few mistakes and still come back as long as you have good teamwork.

If only flamethrowers could be used to defeat the monster that is ‘scheduling difficulties…’