I'd be more for a Regexp->new( ... ) which stringifies its argument and then does the qr//.

Hm. qr->( EXPR ) maybe?

None of the other of the quotelike operators (q// et al) have suffixes so it doesn't seem regular (although it would be orhtogonal to the usage with s///)

Heh. I wonder if this would fly if I suggested the name qre//? :)