While I would agree there are some very creative ideas in the 5th Gen, namely the very first fully-evolved pure Dragon type, Haxorus and one of my fav Gen 5 Pokemon, the Deerling/Sawsbuck evolutionary chain. Another original idea is the first-of-its-kind Galvantula. There is also the rustling grass, though that usually houses "Chansey-lite". One other thing to consider when judging B/W on their merits is the story: in my opinion, the story line for B/W was the most enjoyable one yet. Nevertheless, the idea that Game Freak is not running out of ideas is a little unrealistic. It seems the further away from the first gen we get, the more similarities we see. It is incredibly evident even in the very first routes you embark on in B/W. The composition of the types of Pokemon you face is pretty much as it was in R/B compounded with the Hoenn games' starter routes as well. Patrat=Rattata, Lilipup=Zigzagoon, Pidove=Pidgey, Purrlion=Poochyena, Sewaddle=Caterpie, Venipede=Weedle...need I go on? While they do field some new ideas, GameFreak is running out of steam in general--which is bound to happen after 6 Gens. They are now nearly 650 Pokemon in and soon to be more after the release of X and Y. It is incredibly hard to maintain originality for that long.