högt i tak

Heter "högt i tak", syftande på ett öppet diskussionklimat möjligen något så svengelst som "high in the ceiling" eller finns det något annat uttryck

Well, I believe högt i tak, in this context, means that you, or anyone, can express your opinion freely without having to consider rules or protocols, formal structure, etc.

But open to the floor, while it means that anyone in the room can now express an opinion, still has a lot of structure and rules behind it. First, the subject has to be declared open to the floor, and then anyone who wants to say anything still has to raise their hand and be called upon before they can speak (at least in the formal sense of the phrase, like in political debates, etc.).