I was thinking that this should be public. to people to see but not necessarily give people the right to write here.

No, this section was meant to discuss internal things, development choices, development problems and so on.

While some things can go public, like the planned roadmap, other things are better managed privately from those who actually DO the development.

As an example "security related" is a topic better discussed privately, in case something need to be addressed.

Additionally, some times is not desirable that problem are widely known, while I understand that problems (say installaton issues) need to be known to be addressed, being known from the general public doesn't help, and only affect the general public view, (usually detrimentally), so a limited disclosure to the development team will be enough.

That's my view at least, but I'm open to confrontation.

OK that was just thought because I always try to be transparent with everyone.