If it was required, that would be great, I am a Trainer that doesnt usually catch many Pokemon until later in the game. This exercise encourages Catching Pokemon.
Beside the fact you might have to do it, ie. its Required, Not much. Although, if you want to progress through the game, that would be the perfect reason to do it.
Assuming Its required.
Im sure there are plenty of people that would like doing this quest, me being one. A lot of people probably wouldn't need the PokeDex to solve the puzzle, but you are looking for them in the wild, its Harder, because you arent guessing, you are looking for the Pokemon
Well, the thing is... PU will be designed to contain many quests, but none of them will be 'required'. I mean, you can by-pass any quest if you want. This was done because the team didn't like the fact that the games were linear. There were too much 'do that before you can continue' in the hand held games.
Jerry, usually when I post idea's, I leave the "reason" or quest "rewards" to the higher ups. Why? Well, first off, I have no idea how they plan to work out the game. Nor do I understand what they plan. Hence, why I leave that in the open.
This is why the Quest & Plots is put as a sub forum of Ideas and Suggestions. You can suggest the reason/rewards and the PU Team will try to see into them. If it can be implemented then it's good, if not, the Team will make the necessary modifications to suit the game. Of course, all these happen after having deciding whether the Quest in question will be implemented or not.
And to add to Frenchfry's comment, I can safely say that half players read the entire thing, and half don't pay the slightest attention to it. This is why in PU they decided that you can skip the 'lengthy story' if you like, so that those who are interested in the story can read them, and those who don't want to read, can skip the 'boring part'.