Lady, EVOLVED 
medievalists: *constantly petitioning unicode for privateuse variation selectors*
me, who successfully petitioned Junicode to capitalize on a specification grey area and just use tag characters for exactly this purpose:
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i don’t want the unicode consortium to know about this because they will Not like it but also, hey medievalists, it works
for you japanese scholars out there, know the old english scholars are just as salty about unicode unification practices