Hi Graham,
So I decided to give your add-in a try. My first observation is that it would be nice to be able to select a table of find-replace pairs each time, rather than having to edit the actual add-in template. (That's how Greg's add-in [used to] work.)
So far I've only run your add-in once, and Word (2016) stopped responding. I'll try again, but I wonder if it's anything to do with the WC and WWO columns in the add-in table. Your website seems to indicate that for each find-replace pair, one of these columns must have a Y in it. But what if I don't want to use wildcards nor "whole word only"?
Paul