We had a vendor create our data lakehouse with Databricks on AWS using an S3 bucket, and add some MSSQL databases and flat Excel files. Four workspaces were formed under this metastore and attached two to separate clusters, however, they did not enable Unity Catalog. With the newly added improvements to Databricks regarding UC, I was wondering what the impact would be to the workspaces and users if I enabled this option. Currently, Access Modes are set to No isolation shared.