[gpanders]

>E.g. when you are in a vim terminal and you go to normal mode to yank some stuff to put it in the other pane with the code, nvim defaults adds line numbers to the terminal that need to be cleaned up afterwards

Maybe I'm misunderstanding, but the Nvim terminal does not do this, at least by default (maybe some plugin enables this "feature"). If you yank some text from a terminal buffer in Nvim and paste it into another buffer with p, no line numbers are added.