Just to weigh on this quickly:
Given that we have PRINC-TO-STRING, PRIN1-TO-STRING, and WRITE-TO-STRING, an N-argument version should probably exist in these variants too, and be named along those lines.
Contracted names will not be added to Alexandria, though, unless supported by existing tradition (Zetalisp, etc -- PG doesn't count.)
(And sorry for the delay on this -- as well as other -- Alexandria issues.)
Cheers,
-- nikodemus