Default calendar sharing permissions for all users in internal organization

I am so surprised to find that I can control the default sharing experience of calendars with people outside the organization but not *within* the organization.

This means that if I have two organizations working closely together then I can set the default to be 'Can view titles and locations' and each organisation can see this level of detail in each other's calenders - but the co-workers in the same organization will only see free-busy. Unless, that is, each person manually changes the 'Inside your organization' sharing permission - or we have a PowerShell script run on a periodic basis to change people's internal sharing permission (with the attendant complexity of those people who have a legitimate reason to be excluded from the script making the change).

It seems like a significant oversign in the abilities of the Exchange Admin Center and sharing permissions. Does anyone know whether this is on the roadmap? (I wasn't finding many useful hits when I searched for the answer - which is why I've ended up here.)