PSA: The guy who trained me said always draw in model space at 1:1, and it took me 4 years to admit he was wrong
I was a junior drafter at a civil shop in Omaha back in 2019, and my lead hand drew everything at full scale in model space with no exceptions. He would say it right at my desk, every single time, like it was gospel. Then we got a 300 acre subdivision job with 40 sheets, and his method meant we were scaling viewports by hand and fixing text heights all night for two weeks straight. When I switched us over to annotative scaling and paper space dims, the redlines cut down to almost nothing on the next submittal. Anybody else get trained by someone who was dead set on one way, only to find out later it just made busy work?
Did the old guy ever have to deal with multiple layout tabs or was he just drawing everything in one viewport? Because I've seen both camps and the 1:1 model space thing only breaks down when you start stacking sheets. What worked for me was keeping model space at 1:1 but setting up annotative styles for all text and dims so they auto adjust per viewport scale, takes maybe an afternoon to build the template and saves you weeks. The real problem isn't model space scale, it's hand scaling anything, that's where the busy work comes from. Once your template has the right annotative styles loaded, 40 sheets is nothing. Sounds like your lead hand learned one workflow in the 90s and never touched it again.