Right now in Calgary, there's a 2019 Raven Model S for sale on Kijiji. This is obviously someone who isn't happy with their car. There's also a 2018 Model X, which is likely the same story. And I bought my winter tires from a guy who sold his Tesla because "It's great in the city, but doesn't work for long drives". (I had 25000 KMs on my car in 2 months at that point. It was news to me.)
There are a TON of people on TMC who have spouses who don't like the family's Tesla because of charging speeds. That's a flashpoint, but ultimately, it's a different car, and it's used in a different paradigm. Superchargers are nowhere close to the speed of a gas station. V3 chargers are faster, but they are not equal to gas, even in a LR 3.
My concern is that people buy a Tesla thinking it'll be the same, when it isn't and won't be. Superchargers won't change that.
I just care that people see "different", rather than "bad". And, I don't want people to buy a Tesla, and then be disappointed with it. If Chopper plans to drive 600kms between towns in the evening for Hockey, he's not going to like adding an hour to the night while he stops to charge. And that won't change until he can destination charge at every arena while the game is on. Which is many years away, realistically.
Investing in a Quick220, and using the UMC might be possible and might help for now. It should get 23-25 Km/hr charging if you can pull 16 amps across both circuits.