I think you'll regret adding too many entries to that - you impact
performance as ADSM compares the list during backup.  Since the files
don't change much, I'd just back them up.  We actually never consider
restoring into our rootvg - we use our mksysb for that, and ADSM on
system files is for specific files if we happen to damage one, or to
restore config files after a mksysb restore.  If we restore over /usr
for instance, we end up with a nonfunctional server.