The Mavic Mini CE version is what you guys use in Italy, so its not the FCC version! Its still the CE version, just the 5.8ghz signal is boosted a bit - but otherwise hardware wise the CE model is different to the FCC one. So when in Italy you guys do the FCC hack, you're still flying CE model, not FCC - just power is boosted a little bit. The real FCC model goes 4km in 5.8ghz, meanwhile our CE versions in 5.8ghz with the mod go about 1300m maybe a bit more! So I think that its not illegal, as its not a real FCC version hardware wise. The FCC model has a special Sky..something microchip that amplifies the 5.8ghz signal so that it reaches 4km - and our CE models are missing this Sky...whatever microchip - so the amplification for the CE models happens based on how much power they supply.
So according to the above - the CE model in Italy (FCC hacked) should still be legal to fly in Italy, as your drone will not fly further than before, it will not fly even half way or further than a real FCC model, so you should be fine.
I'm not gonna mess with my Mini, I'll just fly it all normally as it is without any modifications. I was thinking of getting that night time lights thing with the 2 lil torches on the sides of the drone because I like to fly at night, but that's a normal accessory sold in the shops - not some semi-smart workaround to get more signal in 5.8ghz!