>>But every rewrite I've ever been involved with always cost more than planned. That needs to be considered too.
Agreed- not least since in January 2013, rewriting in anything that is not open source (and therefore cannot be summarily Foxed) is like jumping from the frying pan into the fire. If ever there was a time to make haste slowly, this is it.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
