Require Open Source for Password Managers

I made a new thread for How should Privacy Guides take decision?

Some recent comments about that could be moved there.

Also, I closed the poll. I think I agree with Jonah, that while it shows a small majority supporting open, we might need to wait for a stronger consensus - even as I personally support requiring open-source, and believes there is a double-standard going on (see Mull (Android Browser) + Criteria Change) where team members and esp.