It's not the most original idea as I've seen this just about everywhere, but I've decided to do it and it'll give me such an accomplished feeling when I'm done. What I intend to make is a world filled with the first 251 Pokémon (according to the National Dex), with a lever and redstone next to each going back to a central base so that you can, in fact, catch 'em all.
Each Pokémon will be in a location appropriate to it, i.e. Magikarp is over water, Caterpie is among trees.
I understand this is going to take a hell of a lot of work, and most things will be INVedit'd in. Anyway, here are the screenies, posted in order from first made to last:
If anyone has some constructive criticism, I'd love to have it. I'm also taking requests on which Pokemon to make next.