Jeremy,

As your mailbox is full, there are the corrections that are needed

Northern Ireland (regions)
Old Regions replaced with new 11
 
France (flags)
Regional Flags or coat of arms for the following regions, ( all other regions have logos, so there might be copyright laws)
Auvergne-Rhône-Alpes https://en.wikipedia.org/wiki/Auvergne-Rh%C3%B4ne-Alpes#/media/File:Blason_Auvergne-Rh%C3%B4ne-Alpes.svg
Bourgogne-Franche-Comté https://en.wikipedia.org/wiki/Bourgogne-Franche-Comt%C3%A9#/media/File:Flag_of_the_region_Bourgogne-Franche-Comt%C3%A9.svg
Bretagne https://en.wikipedia.org/wiki/Brittany#/media/File:Flag_of_Brittany_(Gwenn_ha_du).svg
Corse https://en.wikipedia.org/wiki/Corsica#/media/File:Flag_of_Corsica.svg
Centre-Val de Loire https://en.wikipedia.org/wiki/Centre-Val_de_Loire#/media/File:Flag_of_Centre-Val_de_Loire.svg
Île-de-France https://en.wikipedia.org/wiki/%C3%8Ele-de-France#/media/File:R%C3%A9gion_%C3%8Ele-de-France_(logo).svg
Nouvelle-Aquitaine https://en.wikipedia.org/wiki/Nouvelle-Aquitaine#/media/File:FlagNouvelleAquitaine.png
Occitanie https://en.wikipedia.org/wiki/Occitanie_(administrative_region)#/media/File:Flag_of_R%C3%A9gion_Occitanie_Perpiny%C3%A0_variation.svg
Provence-Alpes-Côte d'Azur https://en.wikipedia.org/wiki/Provence-Alpes-C%C3%B4te_d%27Azur#/media/File:Flag_of_Provence-Alpes-Cote_dAzur.svg
Pays de la Loire https://en.wikipedia.org/wiki/Pays_de_la_Loire#/media/File:Flag_of_Pays-de-la-Loire.svg

Bahrain
Al Wusta is now a discontinued region.
http://www.geonames.org/BH/administrative-division-bahrain.html
 
 
Botswana (regions)
All ISO regions are now active.
http://www.geonames.org/BW/administrative-division-botswana.html
 
Greece (regions)
Mount Athos is Available now (ISO)
http://www.geonames.org/GR/administrative-division-greece.html
 
Switzerland (spelling)
Ausser-Rhoden should be Appenzell Ausserrhoden
Inner-Rhoden should be  Appenzell Innerhoden
 
The Bahamas (spelling)
Harbor Island Should be Habour Island