The broken mechanic that nobody is talking about: Splash damage [Idea]

In Clash of Clans, there's a useful way to take on splash defense: Use minions and ground troops because splash damage can only damage ground or air, but not both. However in Royale the baby dragon, witch, and wizards are able to take on any troop in front of it regardless if it's by air or land. This would make it easier to deal with it in lower arenas.