I would definitely like to know how OPW caused increased turnover.
>You mention an estimate of $400k as annual turnover for the OPW, which (according to the most-recently available annual report that I can find, the 2012 one at https://www.gnome.org/foundation/reports/) is very close to the turnover of the Foundation as a whole ($418k income and $409k expenditure). Those 2012 numbers include $106k of Women's Outreach expenses, so the turnover of non-OPW Foundation tasks seemed to be somewhere in the region of $300k.
So apparently it caused turnover by being a huge source of growth.
[1] http://thread.gmane.org/gmane.comp.gnome.foundation.general/...
[2] http://article.gmane.org/gmane.comp.gnome.foundation.general...