That's right, but can't you define a not-so-special copy under the PSD/Special Copy directory?

E.g. create a file named notspecial.copy:
;PL/SQL Developer SpecialCopy definition
;<LINE_1> for first line
;<LINE_*> for all other lines
;<LINE_N> for last line
;

<line_1>
<line_*>
<line_n>

(I tested it, and had to restart PSD 7 to be able to define a keyboard shortcut.)