Some cases don't work with wireless charging.
Agreed. But also some cases can work in one charger or another. Obviously depends on the combination of the design and placement of both.
In my old charger either my large iPhone and think case there was only one charge spot and if it wasn’t exactly perfect it wouldn’t charge. But it wasn’t the case. If was the large size and the phone and the alignment of the coils.
Side note I don’t missing the charging lights from my old charger. Like you said it’s obviously to know if it’s charging when you put it. I also don’t need to know when it’s finished charging either since it’s a car you’re going to pick it up when you leave or need it.