Now this would've been fun. Going through particular events in routes, buildings or caves with a select few trainer types. Actually, that sounds a bit too MMORPG, but I'd buy it!
Ain't no party like a Mt. Moon party! It's really nice to see all the trainers just getting together and having a good time unwinding after all that battling. Has a nice sense of camaraderie.
^I remember those times. I beat them all up & stole their money, as well as leaving them unable to defend themselves with their unconscious Pokemans in a place full of wild & bloodthristy animals.