Since this is a suggestion box, what do you suggest would go on those pages? Just what effect it has on stats? Seems reasonable, though having a page with just the line "+10% Speed | -10% Attack" would be a bit odd, but I'm not sure what else would go on the page. Linking them all to the natures page is also not great, just means the player has to take an extra moment to locate the nature from the list.
Still, having a non existent page linked from every 3rd and 4th gen set can't be good.. Maybe just add (+Spe, -Atk) after the nature name and remove the link? Helps newer players but could seem untidy to those who have memorised the nature boosts/drops.