The voting pass handed to the author to vote on someone else's behalf clearly states the requirements. A Dutch passport, ID, or driver's license is required. Polling booths are run by volunteers and they have hard enough of a time already checking the validity of Dutch ID, adding 27 other forms of ID will only make it easier to bypass the electoral protections we have.
Schengen, the EU, and the EEA may have made working abroad exceptionally easy, but working abroad you're still a guest in another country. If you've lived somewhere long enough to forget to vote in your home country, maybe it's time to reevaluate what your home country really is.