IFS Cloud 24R1 Configuration context - Global or Custom

Hi All,

Assuming all users should see Custom objects, I believe we should add them to ‘global’ context instead of defining custom contexts and define rules.
How does adding custom objects to ‘global’ context affect Release Updates/Service Updates?
In addition , I assume ‘Rebasing’ is also a painstaking manual task.
I would like to know IFS recommendations on this.