If I had 3 lets play series all running at the same time I would for sure make sure they are all not Pokemon. Pokemon is nice, but a YouTube channel needs variety. I can't speak for everyone, but I can say that most people wont retain interest in 2-3 series that are so similar. I would pick a different game for the third choice if it were me. But you're asking for a third Pokemon game in this thread so here is what I say: Pokemon XD: Gale of Darkness or Coliseum on GameCube. They are still Pokemon games but they are different from the average handheld ones. This will let you play 3 Pokemon series and at the same time let you still have at least a little variety. Just remember for the future that the same thing over and over can get repetitive and make people slowly creep away as the lets play series progresses.