The part about "Substandard Treatment" hits home for me. When I first went remote the hardest that was the hardest thing for me to adjust too. Lunches and/or dinners being bought for them, weekend team trips, etc. It's a trivial thing in the grand scheme of things, but it can affect morale.
Also jealousy issues... Realize that most people can't stand those things and it tends to turn into a test of personality, who will kiss up no matter how awful the experience, or who has the guts to admit the emperor has no clothes... In my wife's work at home experience there was some jealousy that she got to avoid teambuilding by default, while the office people were punished by having to attend. How come I have to go to the Christmas party on my day off and (VLM's wife) doesn't have to?
Oh and another jealousy issue... in this day and age not so many people smoke, but the smokers did not like that my wife could theoretically smoke at her desk but they can not (thankfully she doesn't smoke)
And discipline issues... "(VLM's wife) gets to pick up a sick kid at school without being formally written up for leaving work early because nobody notices, so why am I being written up?" and so forth. A lot of workplace BS exists so bosses can manufacture the reason to fire folks they can't just fire for no cause, and its going to collide with the obvious work at home differences.
At medium size corporations you can also run into Dilbertian requirement problems. Small corporations ignore "corporatism" and big corporations already have remote training, but it can be a mystery how to check the checkbox for annual diversity training, or annual PCI/DSS compliance training, or however else HR tortures the employees. She usually combined this kind of stuff with the rare facility visit, so we'll all go to diversity class as a team in the morning and then hang out and talk about work (aka goof off) in the afternoon.