>>41430962>>and somehow you can't catch pokemon that are too high level because it might make the game even easierI'm going to go against the grain and say this mostly doesn't matter. Most of the mainline routes have obstacles that prevent you from moving on before the story/gym, so you'll likely never run into a Pokemon that's higher level than your cap, unless you're going on the routes upcoming before the gym, which is fucking retarded given that the gyms are so easy.
There is one exception to this: the Wild Area. The Wild Area is the one area where you can reliably encounter Pokemon higher than your gym cap. Capping the level tells the players to not even bother trying to catch these Pokemon, but instead use them as optional mini-boss fights for exp. It's a means for Game Freak to give players an extra challenge without risking them catching a higher level Pokemon by sheer chance and then breaking the game.
Obviously there are a million ways they could have implemented something better, but an attempt is still an attempt