I don't see how "mistrust' this mechanic will induce some elaboration please?

I see this as more of an extended "Peril" keyword - the investigator has to deal with this thing alone, without any help or advice from her buddies. But instead of one-off effects, "Hidden" cards linger, like the weaknesses that sit in your threat area and do bad stuff until you can remove them.

And I don't think that there will be cards that force you to more or less do your damnedest to fail the scenario like in Mansions of Madness 2. But seeing that your colleague is handicapped in some way without exactly knowing in what way means that you cannot rely on him entirely to support you as usual. You have to take that into consideration and it will certainly lead to some situations that could have gone entirely different if you hadn't misjudged the effect of a Hidden card. And if every investigator had two Hidden cards in their hand, that should definitely change the way you play.

There are only 4 cards with Hidden, so it's only possible with 2 players (and then quite unlikely).

This is, in my opinion, the best development for the game so far. I LOVE the potential for this game as a light roleplaying experience and the way this mechanic will force us to play 'in character' more is a wonderful development. I think as my wife and I are playing we will absolutely not discuss what hidden cards exist in our decks so we won't know what to be looking out for.

29 minutes ago, Big Tom Casual said:

This is, in my opinion, the best development for the game so far. I LOVE the potential for this game as a light roleplaying experience and the way this mechanic will force us to play 'in character' more is a wonderful development. I think as my wife and I are playing we will absolutely not discuss what hidden cards exist in our decks so we won't know what to be looking out for.

Hand you mean hand....

Yuuuup

7 hours ago, Khudzlin said:

There are only 4 cards with Hidden, so it's only possible with 2 players (and then quite unlikely).

yet...

But yes, this new mechanism will come up now and then, not absolutely dominate play.

Still, with thousands of people playing the game, I imagine we will hear about some games where this feature really changed everything.

Bonus points if you exclusively play Path in character