Currently all completing Kingdom Challenges does is give you a few extra souls, which is great when you first start playing but once you have leveled up a decent amount the only thing challenges are really good for are completing weekly tasks (when you are allowed to use challenges to do so)
There really needs to be a better reward for completing these challenges.
How about when you 5 star all of a kingdoms challenges, that kingdoms power level increases?
Doesn’t even have to be a big increase, as every little bit helps…