Only strings as names for :named-registers?

Hi, I wondered why :named-register only allows to use strings as name. I'd like to use a symbol, or, for macro-generated forms, gensyms, because that would be easier for macro-generated forms to associate with the resulting capture index. Sadly symbols don't work currently because of COPY-SEQ in METHOD CONVERT-COMPOUND-PARSE-TREE ((EQL :NAMED-REGISTER) T) Even more, the COPY-SEQ destroys EQuality, so I cannot give some string and look for it later on. What's the reason for the string-requirement? Could we allow symbols, too? Thanks for all answers. Regards, Phil