Weekly Challenges For Clash?
-Basically self explanatory-
Destroy X amount of Townhalls by the end of the week to get X amount of a particular resource and/or XP (Not like the 5 star bonus system)
Beat X amount of Campaign battles to get X amount of a particular resource and/or XP
(I personally think this would give those a little replayable factor instead of just completing them once and never do them again)
Defeat a base with a specific army comp and get X amount of a particular resource and/or XP (different/varies by Townhall level)
Etc...Etc...