Little confused by this, there is already a leaver penalty, that increases with every exiting of the lobby, don't know the exact build up. Think is it 1st 15 minutes, 20/25 minutes, 30 minutes, 45 minutes, 90/120 minutes, etc typically doubling.
So you basically want to trade in 15 minute penalty for a 30 minute one, what happens if at 30 minutes that same thing happens that happens with 15 minutes, you going to ask for an hour penalty to start off with?
Really InnoGames should scrap adventures or change them to player vs NPC/ ai bots, that way only 3 players are needed and the over powered gear is not going to matter much if the opposing team is mirror, then it relies on team work and not who spend the most.
Really there is already the problem of players skipping the penalty by staying in lobby, then disconnect as soon as the adventure starts. They don't even bother taking the saloon/bank. As I have been told by support, not much they can do as it is hard to tell if it is internet issues or true intentional disconnecting. Yes yes, it is very obvious to adventure regulars but to mods who are less likely to do any extensive work on the matter it is not a clear case of abuse.
I don't necessarily have issue with a 30 minutes starter penalty instead of 15 minutes, but queues can take hours before one adventure lobby comes up, so not sure it really matters in the end. I have feeling you will be just as annoyed after waiting 30 minutes to 15 minutes, maybe I am wrong and you can do some calming yoga in 30 minutes better than a 15 minute session.