@Sasquatch That's interesting to read your experience. I wonder it if has to do with the 4" version? My 5" 9mm has been a great shooter.
There are two key changes I think influence my experience. The M2.0 has a longer, stiffer steel chassis embedded into the frame to eliminate frame flex. The other, which may even be more key - is the deletion of the beavertail tang.
I have had the Gen 1 full size (3 of them, actually) and the Gen 1 Compact (now called subcompact in 2.0 flavor, but its the same gun just with the 2.0 changes)
The Gen 1 Compact didn't have a beavertail, but I shot *it* better then the 2.0 Compact 4 inch. So I think the stiffer frame does also lend to the change in how the gun shoots. I don't know if Smith & Wesson monkeyed with the recoil spring assembly - I don't recall if the 2.0 had a plastic rod, or steel, and what the spring was like. My 1.0 has a steel guide rod from the factory with a flat spring.
I would love to shoot a Gen 1 gun vs a 2.0 full size side by side to compare.