My model, North arrow and visual scale is in model space, nothing else.
In my model space everything is drawn 1:1 using inch units
My title block, drawing border, IP warning, PE seal, weld symbols, dimensions, notes, etc are all in paper space.
My title and revision blocks are individual blocks inserted into paper space.
The title block has attributes for customer, project number, drawn by, date, etc that can be changed once and inserted into other drawings to change them.
Because one CAD file may have 60 tabs (60 drawings), the title block gets it's drawing number and drawing title from the tab using a diesel expression.