For the past couple months we have had the good fortune to be matched against alliances of similar strength, which has led to fun/close battles. However, we are now pitted against a new (17 day) old team. We average 15 diamond trophy rank, them all 30 diamond trophy rank.
Their worst team is better then 14 of our teams. Is there an advantage to starting a new alliance, warring until full chest for more guaranteed rewards, then starting a new alliance and repeating? My assumption being you will be matched against much weaker opponents initially.