As a rule, keep failure and onreply routes simple. Actually, as a rule,
keep your config simple (Though simple does not necessarly mean short).
Indeed: KISS applies to ser.cfg very well.
LOL, when did you last see a non-trivial ser.cfg that conformed to KISS ;-)
I think current ser.cfg is actually both quite well structured (even though there is
a couple of things I would do even simpler) and still quite powerful.
-jiri