2. I started missing the magsafe's light the first time I thought my computer was charging but it wasn't (dead outlet before a long flight, so zero charge). Now I open my laptop every time I plug it in a new outlet to verify that it's charging.
Of course, I don't need a magsafe port to solve these, just a special USB-C cable, which is a better solution.
So the only remaining thing I liked about the magsafe was how shallow the port was, which made it easy to clean. Recently I somehow had a tiny pebble or something in one of my USB-C ports that rendered it unusable until I could get my hands on a pin to pry it out.