Oh god no, that’s wrong, very wrong. Most of the regions are governed by countries which are totally unrelated to them!



I think like this it would be better:



Southern Calabria + Southern Puglia + Sicilia east coast: senatorial Greece.



West/central Sicilia: better with Numidia Proconsularis than with Tripolitania, former Arabic invaders were original from the former rather than from the latter (and so did the Arab dialect spoken there)



Northern Calabria + Basilicata + Northern Puglia: Illyricum



Sardegna + Campania + Abruzzi e Molise: Hispania Citerior (or Ulterior, you can decide)



Ticino and Valtellina: annexed to the Helvetic protectorate



Former State of the Church: Greater Roman world emperor directly held territory.



I would also correct the border between Galliae and Noricum provinces and make it matches the Lombard-Venetian/Sardinian border.



(ps. this is not Greater Italy)