A re-numbering of 13/31 at MB was under discussion in the mid 70's as a consequence of ab initio or low time and visiting pilots not familiar with MB arrivals lining up for landing at the wrong end.
I wrote a blurb about the potential for error to BASI at the time. After much head scratching and hand wringing the response was "my suggestion didn't comply with ICAO"
It was especially interesting when there was a runway change enacted.
Tipsy
