Dont know if this has been suggested allready but how about to do a league war ?
You face every faction in your faction league in that way it will be a even activity and strength
The strong will meet the strong the middel will meet the middel and so on
isent that a fair and fun war to try?
Yes some strong faction is in a low league but they will keep moving up fast
and it shud make the faction try to get higher in league to see where there at
and the top faction dosent have to swap region to meet in crw to see who is nr1
And The mid/low faction dosent have to get crushed from top factions and get stuck whit bad matchups think its a win win for every1