CHIME NOISES INTENSIFY
BW2 Rivals? Omg, I want this to happen so badly. Perhaps a battle after every 2 or 3 gyms or something? Ahhh it just sounds so fun!
As for how many pokemon I usually train, it used to be 6 as I wanted to use as many different pokemon as I possibly could. Now, I go with 5: (unless I'm doing a nuzlocke or something and don't have 5) 5 pokemon and 1 HM slave (except for in gen V where I go with 6) I also never use the same pokemon that I've ever used before. (unless it's a nuzlocke or something)