I tried to stay away from any comments relative to trying to incorporate tokens into apps, but the latest change for the Charm of Treasure Finding just needs to be talked about. 3 new Treasure Enhancing tokens this year. Some play with others, while some do not. Now this one works with some others while not playing with some others.
Ok, as far as I can figure it, the Charm of Treasure Finding works with any of the UR Ioun Stones (Nugget collection) It does not work with any of the Rare Treasure Enhancers, as they do not work with anything else. The Charm of Treasure Finding does not work with CoA, but will work with any of the tokens that make up CoA, so Amulet of Treasure Finding or Ring of Riches, or Horn of Plenty or Charm of Good Fortune, but not all at the same time.
Note that it is not that the Charm of Treasure Finding does not work with Cloak of Many Pockets, but the Cloak of Many Pockets does not work with the Charm of Treasure Finding. (relates to Lenses of Focus and Crown of Treasure Finding also)
Also consider the bonus for a 6th level player, commonly defined as the Badge of Nobility, or Medallion of Nobility. I believe that these do not count relative to the Cloak of Many Pockets, and similar Rares, but do they count as the "one" Treasure Enhancer?
I really prefer this as it was originally, with 'Not Useable with any other Treasure Enhancing Tokens'