Hey,
So in the Wretched and the Sealed Library the face cards don't have specific functions, just the kings. They're always had, and having all 4 ends the game.
Starting with the ace of hearts revealed is optional as per those games' instructions, I should make that clearer in the SRD (I'll add it to the list for 2.0).
If you don't start with the ace of hearts revealed, you don't start the token countdown until you reveal it.
The other aces do give bonuses, but I didn't specify those in the SRD to allow people to work with their theme for what makes sense. The three I've used though are makikg 5s and 6s successes, removing a king from okay, and being able to skip a block pull. I'd look at what others have done with that for ideas though.
Does that make it clearer?