When you’re in a meeting of any kind and you’re working to make a decision, one person often has the final say, even if they’re not the one that should really be providing the answer. Don’t necessarily listen to the HiPPO (“Highest Paid Person’s Opinion”).
You have outlined well a blind spot for leaders. The HiPPO may not always know all.
I might consider a third “fix” to your list:
3. Appoint a “Devil’s Advocate” who role is to bring diverse and contrary ideas into the discussion.
Thank you, Mickey!
David