What would be useful was if you could research a collectibles tech that once it was fully researched would make rares appear as often as commons. Would mean that rares were still hard to get at first, but once you'd finished all the puzzles and upgraded everything you wouldn't have to die of boredom waiting for rares. DX

Would also be cool if children 'looking for collectibles' or 'looking for mushrooms' occasionally found them and brought them back by themselves.