The war matchmaking isn’t perfect but it does its job and it didn’t get as much complaint. Hence, it’ll be easier to just sort matches using what’s established already – fiefdoms.
1st place in conquest gets +3 fiefdom or whatever.
Chest rewards will of course scale with tiers that are affected by fiefdoms. This will in turn help a little on the issue of fiefdom dropping, i.e teams will be more hesitant to drop fiefdoms when it also affects the chest rewards in conquest now.