Doing this in Wikidata is tricky and takes time. I don't even see how to
do it well (note that external tools like Reasonator or SQID would also
need to implement the same smart resolution mechanism). Having several
properties for the same thing just because of different ID types used
does not seem very compelling either.

How about building a little external referrer service that redirects IDs
to the correct resource based on their structure? This could be a simple
PHP-based web service hosted on Labs. In the end, the formatter URL is
just for users to click on, so as long as you end up at the right place,
this little indirection is maybe no problem.