I think you mean bottom right, and yeah that would make sense.
Hm, too bad changing this is really annoying, because it could depend on the keyboard mode state and that means having to destroy the button and recreate it with a different length and position any time that changes. Implementing and testing this is probably not worth it, but I'll add it to the long-long-term list if I need something random to do for a little while...
(Would be much nicer if ESC and F1 had the same number of characters, because then I could just overwrite the letters!)