My only issue with Signal is that it does not seem to (or I cannot get it to) work over wifi in the absence of a cell signal.

A minor but useful GUI feature on MacOS in list view is showing the size of directories as well as individual files and being able to sort by those sizes. That extra step in Linux of having to contextually click on a listed directory and choose “Properties” all the way at the bottom of that menu is a minor annoyance