I think this is a very popular feature in Airtable, so much so I think this is one of the key features used to push people into their premium tier offerings.
My basic use case is that I have one group that is just for me as an admin and then a few groups that are shared and there are a few tables I’d like to have synchronized so I can just stay inside the Admin group and not have to leave and head into the other group to check on this data.
I guess optimally, from a technical perspective, it would be cool if this could be implemented simply by doing something like a symlink such that the data from that table is inserted without increasing the total size of your baserow install by actually duplicating all the data in a new table and having to do all the back-and-forth work of keeping them synchronized.
That said, Airtable ALSO allows the owners of each of the synchronized tables to add their own additional fields to the synchronized table so each party can keep modifying it and have their own unique data added on to the synchronized data. This allows an admin to review work done by collaborators and keep his own, private notation system on top of it that his collaborators do not see. Pretty powerful.