I haven't been able to play either game yet, but they look a lot better than I thought, especially 2. The dynamic battling, the huge, explorable areas, and the multiple playable characters really make this game for me. So I'm definitely going to pick 2 up when I get the chance.
The only thing I'd like to see in a future Pokepark game would be more diverse playable characters (Flying type, please), and maybe a better mix of the mini game features and the action-adventure features (for instance, have boss battles that resemble the mini game mechanics a little more like if you had to use the cake shooter to fight Cofagrigus). Also, I'd like to see slightly better interactions between characters, like how Oshawott and Snivy were constantly butting heads when you first entered the Arbor Area. And does Pikachu really need to remain silent when the other three have actual personalities?