I think main problem is that whatever is changed, there will be always a group against the changes and a group for the changes. What one sees as advantage, can be a disadvantage for others. That’s part of the deal and we notice it already. I see some things as advantage while you see it as disadvantage.
Current war system is simply enough to migrate, migrate based on fiefdoms first and if that’s still the same, then on alliance level and finally on Alliance leaderboard rank. Then you know which teams should be put in division one, which in division two and so on. Main advantage of a division is that it’s more fair for most teams. Now you have to fear a loss of next one or two seasons when you win a season and are able to get 5 fiefdoms. When you are in a division that’s just to strong for you, you drop down one and probably you will end somewhere in the middle, at least not at the bottom of the lower division. By giving for example the first four teams a boost, even staying in same division is rewarded. For more teams this will feel fair.
When you get more and stronger members and upgrade your team, you can promote. When you lose a few players, you can demote and have more easy wars. Current war seasons are like a jojo effect for non top alliances, this will be more stable with divisions.
A risk situation like Marique suggested as option is also a nice one just to name one. Best part of it is to change war conditions and make them dependent on a spot, so that we are forced to change our offense tactics. I only don’t see how this fits in our game.
Launching more raids with shorter raiding times is an option you suggest, I really see this as a bad option in my personal situation. We had a change with shorter war seasons already and that was not such a succes I must say. First we had only three days recess, then suddenly war seasons plus wars were shortened to 4 days plus shorter wars. This was leading to troubles, since players like me were not able to fight 3+ wars any more.
Then they changed the seasons back to 5 days and 5-6 days recess. And last but not least they limited the number of raids per player and one you can raid.
I am not married to the game and can only play 1-2 hours max per day. Major part of the players can’t play 24/7 and have only time on a certain time schedule on the day. With 12 hour wars players from a complete different timezone will be in deep trouble, I am not going to wake up in the middle of the night to play a game. So I realy don’t like that option. Remember it’s a game and we don’t want it to become too time consuming. If it would, I would immediately stop.