I like more pokemon, more moves, more towns, more areas. It just helps keep it fresh.
Don't get me wrong, I love the classics, and I still play my Pokemon Blue/crystal games. But when Black/White came out, I bought it the day of release (in U.S.), and had so much fun playing along side one of my best friends. What I liked the most about Black and White was that there were NO familiar pokemon for you to have a base on. It was all new. Every battle with a trainer/wild pokemon was something new. I don't think I've ever caught as many pokemon in any other game like I did with black and white. The only reason I caught them....to find out what types they were.
I mixed and matched my team so many times on my first play through, it was so much fun.
The classics are great, but the feeling of new is just great in my opinion.