Water at chokepoints? Cultists will be huge, either on offense or defense.
And Hemah, since you're going up the arcane route anyway. I'd say OO should be a huge priority (though there's no reason to race for it; getting the holy city isn't very important).
OO is good on this map... too good in fact. Which is why we need to lessen the effectiveness of OO by avoiding the coast for our main cities (but using them as our attack ways).
Illian's have been sighted? Guess that means they're nearby. Oh well, the Priest's are still a long way away, although we should get some sort of defense up against them between now and then.