No, I don't mean by releasing a glitchy game of sporadic quality every year. I mean via the plot, where all the protagonists are descendants of the earlier ones. In the opening narration by Gaia (it doesn't matter that she's dead, the crowds will cheer if there's an opening narration by Gaia), she could explain that, after Kratos killed all the gods, new ones arose, and there was peace for hundreds of years, until 'the bloodline of the God of War' reemerged in a new character, who would naturally kill all the new ones. They could do this, theoretically, as many times as they want, provided they find enough different theologies. It would be an easy way to keep the games creative while still not deviating from the standard formula.
Of course, they could just do a quick cop-out with the Roman pantheon, but that would just be stupid.
Of course, they could just do a quick cop-out with the Roman pantheon, but that would just be stupid.