Re: text/paragraph or wrap=yes/no

> >  * Due to (C) compatibility problem, an additional "MUST be able to
> >    generate text/plain text suitable for 80-column display, and SHOULD do
> >    so by default" rule has to be added.  This may be a significant change
> >    to software in class (B).
Your text says basically "it might be significant to change software to
generate short lines".  But since you claim this is already a requirement,
no new burden is added.

So this is not a con for a wrap parameter; it's just life.