A better solution is to add a feature to the browser to "paste
comment" that ensures that the thing that is being pasted is entirely
a comment.  If the text being pasted already contains comments, it
will "do the right thing".

This change would be much easier to get other people to accept than a
change to the compiler.

People talk about language changes all the time, but they rarely
happen.  If you want to change Squeak, it is easier to do it by
changing tools or libraries, not by changing the language.

-Ralph