There very likely are local image variations that in part result from the location of the artist/woodcutter, and in part the models on which they based their earlier deck.
For example, the Devil of the Besançon, Schaffhouse and other 'Swiss' decks bear particular imagery that seems distinct to the Devil of the decks that seem to have their place of manufacture in Paris, Lyon, Avignon and Marseille, which are again different to the those that seem to be more prevalent in the Italian area.
It should nonetheless also be remembered that what we now call 'Italy' did not exist as a nation in the 18th century or before, and that the connections between, for example, Milan and Paris were far closer than they are now (Milan was under French rule around the 16th century) and, conversely, Avignon and Rome had closer connections than they now do (Avignon was Papal territory).
So to even call a deck 'French' or 'Italian' can add to the confusion if these aspects are not simultaneously kept in mind.
Then there is also the family connections between various Papal families, Sforza families, and the French Crown.
Nonetheless, I think it is evident that some decks have clearer local imagery than other decks (such as the more obvious Visconti-Sforza decks), and that once local variations are introduced, they are likely to be copied more or less 'as is' by other publishers... allowing for minor artistic license in alterations.
With the wings on Temperance, they certainly are 'unexpected'... but I have seen the virtues depicted with wings before... I'll have to try and dig some source and location!