How upfront about the world, the game, and their shared rules should I be?
If I put all the rules out and am very clear about everything... there will be no non-emergent surprises, and I will probably need to design a deeper ruleset.
If I play my cards close to my chest, the game runs the risk of feeling arbitrary and... improvised? Which I understand probably isn't a problem for some!
And... if I do keep secrets, when I reveal them, will people just share them? Will everyone need to get their own secrets so they don't feel left out & also so people aren't disappointed if they share secrets only to discover they are the same "secrets"?