I view their world building like they did in VG (Vanguard) focus on the biggest continent first, then the next biggest, then the last one cuz it's smaller. Work on the first during PA, second during A, then last during beta. If they can get there sooner, GREAT!
If memory serves me, that is how they did it in VG and that last continent ended up being a lot of people's favorite. From what i saw in VG, and what they are doing world wise, I have no doubt that it won't be less than amazing!