I wish nickname AND element name would show up certain boxes. Like in INIT boxes and similar ones like it when I type an elements name in the box it shows me options for nicknames but once I select it it just shows the Element name, it can become hard to keep track and swap between the two, and it also lessens the usefulness of nicknames in those situations. Also in a math box it will let you type in the element nickname in the result box and it will help you find it, but it won't help you find it in the Expression box, you either have to know EXACTLY how you named/spelled that nickname or know the element name, again kind of lessening the usefulness of the nicknames.
IDK if these things can be fixed or added easily but it'd be really nice QoL thing.