Awkwardly enough, about a post that's over two years old, now, having 190 intended pokemon is perfectly plausible. With 255 as the base number, or whatever it's called, and my partner being at least fairly adept at knowing his way around computers and gaming things, he stated that it should have more than enough room in the cart for 251+ pokemon. In other words, 190 would be a reasonable amount. After all... Look at the carts for Gold and Silver. They were merely gameboy carts. You could play them on the original gameboy. They just had color capabilities. Thus why when you played Crystal there was so much more animation in the opening sequence, the legendary dogs actually looked like the dogs, and why you could actually chase Suicune across the map.
All in all, though... Finding out about the 190 originally planned pokemon thing is really neat.
Wait... you keep in touch with Morimoto?