Sincerely, I think we should leave a bigger time window between the upcoming battle at Xerxes and the next "big event", whatever that is. Idk how much time it has been since the hordes thing and the Phantasmagoria, in general, I'm working with 30-40 years at most.
I mean, everyone has the right to play as they want, but I'm for sure going to start to add a bigger time gap in my civ building stories to better work with the spread of stuff like Metal Making, Farming, etc... Actually, I think it still doesn't make much sense even if I do that.
Damn Vowzra, look at the mess you have begun.