Hello,
Just posting because I have done the sinnoh underground 2 times now. Both times the hints from catching/showing pokes to the npc have all been the same. None of them are actual clues just simply say "the treasure room holds a lot of treasure" or something of the sort. I'm not sure if this is a glitch or a problem. However having this set this way means the only way you actaully get hints is by giving the items instead. Is it maybe that the pokemon must meet a certain iv total or something of the sort? Also, possibly the spawn changes that were announced may address this? If not it makes catching pokemon to show to the npc rather pointless and would be somewhat dissapointing.
Thanks for your time.