One time downgrade for rushed town halls
One of the problems I have come across are people who upgraded their townhall too fast(I.e. Rushed base). When they war, they are going against higher level town halls making almost impossible to even one star. I propose a one time townhall downgrade. Yes you will lose whatever you gained from upgrading to the next level town hall but it will be beneficial in the long as you can compete against an equal level player. Also you should be refunded 60% of what you lose in upgrades by downgrading. Example, if you were to lose an Xbow by downgrading you would be refunded 60% of the cost it took to build it as well as the cost if you upgraded it to a second or third level. The refund should be place somewhere where you can't lose it by being attacked and you could use the extra loot to upgrade other items to strengthen your new downgraded base.