First, thank you for putting this in place, even though it's far from perfect.
I mostly work Belgian and French profiles, and here's what I have to say:
- The good point, as far as France is concerned, is that it should limit the biggest location errors. No more "Nevers, Puy-de-Dôme, Clermont-Ferrand" or "La Rochelle, Isère, Rhône-Alpes". The suggestions, as far as I can see, actually place locations in what is (or was at some point) the correct departement and region.
Unfortunately, it won't help with anachronic place names such as people born in 1200 in Yvelines, or Kings sacred in "Reims, Marne, Champagne-Ardennes"! Ancien Régime (before 1790) provinces are not covered at all (except Paris). Also, departements that changed names between 1790 and now don't seem to be covered either. There is one pretty cool feature though, it can manage the change when Seine-et-Oise and Seine were replaced by different departements, Paris, Hauts de Seine, Val d'Oise etc (1968) so you can see directly which to use if you're recording an event before or after 1968.
Also, I avoid entering regions when I record French locations, because they're no use (departement names are unique in France, and therefore town+departement+France is sufficient to identify a place). Unfortunately, the tool systematically suggests them. That's likely to create more errors, since French regions changed less than 2 years ago: one more reason not to use them.
- Belgium: the tool had no there are no historic locations - nothing to address place names before 1830, before Belgium was Belgium. Post 1830, it is not language consistent: it mixes up location names in French and Dutch: for instance "Mechelen, Mechelen, province d'Anvers, Belgique" which is not good; it is either "Malines, Anvers, Belgique" or "Mechelen, Antwerpen, België" not a mixture of both.
Bottom line: when entering profiles, I still have to Wikipedia each place name to find its historic province. Never mind, I actually enjoy doing this!