The only type that Johto didn't have original was Fighting, and that was the same guy from the previous games. G/S was meant to be like that.
HG/SS had the best Elite Four. Unlike Sinnoh, all four of them had the type the represent (Flint was pathetic), they were somewhat difficult (Bug types? Really? The only threatening one that Aaron has in Diamond and Pearl is that Heracross), and they actually used six Pokemon. --- http://i.imgur.com/K29ku1D.png Hardest decisions ever: http://www.contrib.andrew.cmu.edu/~msandbot/pokemon/blackwhite.html