I think option C (read-only) is a very good choice. Indeed, it allows discussions to be made public and ensures a certain quality of exchanges.
The fact that the discussions are public offers, in my opinion, several advantages:
- Contribute to the proper understanding and education of readers (Keep readers outside the committee involved in DAO)
- Understand the direction of DAO, as well as observe the experience and reasoning of the committee members
- Ensure complete transparency of exchanges
As mentioned earlier, I believe having these discussions on the forum is a good thing. If the committee members need more granularity to organize their work, they can create other tools for discussion (Telegram, Discord..). The main thing is that the key reasoning and arguments are presented on the forum.