Well guys, here is a solution that I've implemented. It may not work for most, but maybe it can help some...
Quick backstory:
We've had 5 Apple Watches. S0 38 Stainless, S0 42 Alum, S3 42 Alum, S4 40 Alum, and S5 40 Alum. Sadly 3 got stolen at once, leaving us with a S0 38 Stainless that Apple repaired in 2020 (sent a refurb), and the S5 Alum wich is the one that got "updated" and ruined the modular face that I used every day for work (2 world times, weather, stocks, etc.)
I swapped my wife's Series 0 38mm for my Series 5 40mm. The S0 is too old for OS9, so the old modular face is there and is more legible than the newer watch with the larger screen.
So... if you don't need the new fangled features of a Series 4 onward, get a Series 3. They're still available super cheap and your old complications are there! (Hopefully apple doesn't try to hard to "update" that.)
Solution #2: Get a normal watch! If you are not using the health or fitness stuff, get a G-Shock, Seiko, Tissot, Rolex, whatever. Many of them have large numbers, and complications that will never be changed by a dumb software update. Even a $30 Casio might be good enough. I recently got a G-Shock GWM-5610U, and it's great! Solar powered, syncs by radio, has a legible world time, etc. (My Apple watch has sat on it's charger quite a lot lately.) In a few weeks I'm looking at ordering a Casio Lineage LCW-M100TSE (Titanium, sapphire, solar, radio, legible digital complication...) If that looks and functions as reviewed, my Apple watch days may be over.
We were about to buy 2 new Apple watches this year, but no way. This whole experience has shown me there are other options. I know Apple doesn't give a flying squirrel's tail that I don't buy 2 watches. Their hype machine will bring in loads more hipsters than they lose old folks. But at least I know I've voted with my wallet.