I wish that you could use more than one pet in the battle. For example, you could choose Tammy and Bela together and use them together in the battle.
But with one restriction, should only exist for normal pets and the pets from the Pro League (like Phoebe) should still be able individually and not together, otherwise it would be too easy/difficult.
The same goes for the beasts. The first beast should appear at the forst crown and the second beast at the second crown.