Those are some good points you bring up. I had been going back and forth between the SE 2020 and Mini. I finally gave up and have been using the SE 2020 because of one reason and that is Touch ID. If/when the iPhone 13 Mini has Touch ID built into the screen I will gladly trade in my SE. It really is a tough call otherwise as both phones have their pros and cons imo.Here's my breakdown of pros and cons of Mini vs. 2016 SE
Pros:
Much faster
Much better screen
Will support newer IOS
Slightly better camera
Cons:
Still a bit too big. It's still primarily a 2-handed operation for me.
Glass back
Camera lenses that are not flush with the back of the phone, preventing it from lying flat.
Power button on the side. I keep pressing it all the time by accident.
No headphone jack
No physical button to go to home. Not a big fan of swiping.