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A random idea - How about a feature to blacklist certain email ids from blocking your calendar? Could be a good add on to Opt-in feature

Most of this could simply be achieved by using "opt-in" bookings, but I do understand that if we use blacklisting or whitelisting, that manual bit could be taken care of.

<https://github.com/calcom/cal.com/issues/1913|https://github.com/calcom/cal.com/issues/1913>
Here's the RFC for this and much more 

Interesting list of features! Thanks for sharing <@U029Z7ULU7J>