That’s about as likely as Shergar winning the 12:15 at Newbury
People have tried to do this, and haven’t succeeded, mostly because the weren’t able to persuade enough people that it made any sense. There have been successful tag changes in the past - highway=ford
to ford=yes
is one that springs to mind. That did make sense because there was an obvious problem previously - if a way was tagged highway=ford
how did you know where it was primary
, secondary
, whatever?