So I'd thought the pigs only levelled up as we moved through the campaigns. Their level never changed much when battling after using scouts. As soon as my team hit 8000 it seems the pigs jump 500 every time I do. Making the wins much harder to come by than earlier in the game. This has slowed my levelling dramatically as that is a proportional thing for the player costing more coin and time. So the game has slowed to a crawl and the fun is being sapped with frustration setting in.