Show thousands separators at number of scrollback lines
In the Prefs window, the "Limit scrollback to: ... lines" should preferably show the number with thousand separators (according to the locale), as it's done in dconf-editor.
This would, obviously, make it easier to see whether the entered number is let's say 10k, 100k, 1M, 10M etc.
This may be more or less useful, depending on the outcome of vte#2504 (closed).
Allegedly it can be done using the "input" and "output" signals:
https://stackoverflow.com/questions/4827831/how-to-change-display-in-gtk-spinbutton
https://www.mail-archive.com/pygtk@daa.com.au/msg16375.html