Cyclone, I agree too that they can't do all the info that bulbapedia and so on do. But, one thing they could leave a lot out from is the whole physiology part. Like I don't need my pokedex to tell me my chansey has a tail for instance xD just something like:
Chansey, the Egg Pokemon. This Pokemon carries an egg in the pouch that is rich in nutrients. It will feed the egg to any injured person or Pokemon it meets, as long as it senses a good heart. The eggs are laid several times daily.
Something like what dexter does in the show, u know?
(Idk about ash's new pokedex, please forgive my ignorance of the anime as I haven't watched it in years xD)