We have been planning to add a progress bar to the PPC version.  But an
estimated time would be very difficult.  Each instrument could have vastly
different compile times, so csound would have to test each instrument before
running.  Then there would be the question of conditional behavior inside an
instrument.  So basically it would add overhead at the beginning and result in
a most likely wrong estimate of the time needed anyway.
-- 
Mike Berry
mikeb@nmol.com
http://www.nmol.com/users/mikeb