You're right about the flow being better in multiplayer. I think it is indeed better in that case. Hadn't really considered it as I'm more of a singleplayer guy. I hope there will be an option for both.
It's true that you'll have less to look for in the next playthrough if you just assume that nothing is there. I think this could be solved by having failed checks on active perception checks, but not passive. This way you wouldn't automatically be told that there's something hidden near you, but if you suspect something is there you'd be able to check and get an answer.
