I have an idea about the battling style..
You know in Pokémon Ranger there is the arena where you have to capture that Pokémon, so what if it was like that, except that the trainers put 1 Pokemon each, and have set buttons for the 4 attacks.
You see in the anime, the Pokemon move around, and not stay in one position.
For capturing Pokemon, you battle it until it's health is low, and then pick the Pokeball and use the stylus to pick it up and place it over the Pokemon. For group battles, you would put 2 or 3 Pokemon in and you choose to be one of them.