Kratos vs. Zeus in God of War III is still one of my favourite battles in the series. That final sequence is my favourite in the entire game, really. Despite some not-so-great story choices, it all culminates in one epic moment after the other.
While I'd love to see Kratos in Irish mythology (I wrote about it back on Dtoid), I really hope he will be back to Greece for God of War... 6? Aye, 6. There's still so much to explore there in terms of mythology, especially now that Kratos and the IP itself have matured so much. Aphrodite, Artemis, Hestia, Demeter, (the original trilogy really did the goddesses dirty, eh?), and Apollo are all Olympian Gods that are still alive, and that's not to mention the non-Olympian deities and non-divine characters.
After causing so much havoc in Greece, it would be nice to conclude Kratos' story by rebuilding his homeland 😃