The best thing to do is to facilitate the system. So any player puderia mount your competitive team (perfect IVs, natures and abilities). And test several different configurations. I for one, used before crossing Pokemon eggs of different groups to spend IVs. To this needs to produce various Pokemon for you to pass these IVs to various Pokemon. But with this system change two for one, never be able to form competitive teams varied. This limits their possibilities, makes it very difficult and makes it extremely expensive! Any idiot realizes that this system does not benefit variations of times and pokemon creators. Players must earn using intelligence and skill! To make this possible should facilitate the obtaining of competitive Pokémon for everyone!