Just out of curiosity, how would you pronounce ‘Julius Caesar’?
I pronounce it in the good ole American way - Julius Caesar. Not with a hard C. But like most Americans I tend to pronounce foreign words as they are said in the language of origin, although I tend not to use Latin pronunciation.
My favorite Brit-speak: the Italian film director Pasolini (Pass-O-Lini) is pronounced Pass-AHL-oni in Great Britain. Truly dreadful.
Remember there are two distinct kind of Latin pronunciation. The one you’ve been discussing is Medeival, or ‘Church’ Latin. pronounced rather like Italian. The older is Classical Latin, as used by politicians at the end of the Republic. It that kind of Latin Caesar is pronounced much like ‘Kaisar’ in German, hard ‘C’. Medeival Latin pronounces Caesar as in ‘Caesare Borgia’, with a ‘ch’ sound for ‘c’. I do not know where the English soft ‘c’ as in Julius Caesar came from.