One thing that previous reviews didn't touched on yet is that the Hunch Deck revealed card is visible unlike cards on hand. (Thematically weird that his hunch is visible? The Insight so exciting it shows on his face?) If you play as play guide suggested that cards on hand are hidden information for immersion, Hunch Deck opens up some interesting table talk and essentially "upgrades" team-play cards.
If you got the new format The Circle Undone Investigator Expansion, it comes with cards that already can take this advantage : Delay the Inevitable (Allow others to request for it, discuss who needs it the most, and play first then move into Joe to take it once his turn begins. As opposed to you having to give it to them), Crack the Case (Can come in just to take the share or even finish the location and take the bounty).
Classics like Cryptic Research is an instant 3 cards for everyone to consider on their own, and request Joe to go first and give them cards to get more icons to deal with tests they are going to take (in normal use if you want to give someone 3 draws, Joe would only know about everyone's card count but don't know if they are good or bad), Shortcut which let Joe push anyone in his turn, but now you can discuss even before anyone take their turn how to use this Move. Emergency Aid / Logical Reasoning is similar to Delay the Inevitable that allows others to request for it as opposed to be in mercy of Joe. A situational Evidence! let you plan about exact damage to left for Joe to finish off and get the clue, like when playing with Roland Banks everyone knows he has the ability and can plan around it.
Designing the Hunch Deck around team-wide ability is fun and can improve the table's efficiency, similar to once you use Scrying and saw what cards are coming you do things differently than before. Some team-play cards don't have the luxury of pre-planning like Joe's Hunch Deck, like Bob Jenkins which only allows revealing Item asset (and not any other cards) to each other when at the same location, or Untimely Transaction that you have the opportunity to reveal only 1 Item card (which funnily might not sell!), or "You owe me one!" that you get to look only after playing it (and might find nothing interesting, it's a Gambit after all).