Would asking users to run and connect a terminal emulator be too much?

compare to Serial Monitor and where did I go into line art? Can you get that on an LCD?

No. The ability to put up text that can change without printing a new line should be enough.

Being able to iterate through menu choices in 1 line of space should work on PC and LCD.

But yeah, not many would make the effort for something they don't know.

Leaves me more to think of.....