I try to imagine what Orzammar or Kirkwall would look like under the Frostbite engine, and I weeeep because we'll probably never see it. But there's hope for Minrathous! And Vyrantium! And Qunandar!
We can only hope. At least Minrathous, please. It's the largest city in Thedas, and given the complaints about the lack of cities in DA:I, maybe Bioware will try to do it justice. The Juggernauts, the dwarven embassy, the Proving Grounds, the Circle...
Also, there's another thing Minrathous is famous for: sieges. Most of WoT's description of it is to explain why it has "the unique honor of having never been conquered". It has endured the darkspawn, Andraste's armies, Exalted Marches and previous Qunari invasions. Fitting for a city that draws inspiration from Constantinople. I'd be very disappointed if we don't see a siege in the game.*
* I'm not optimistic, but I'm not pessimistic either. In DA2 we never saw the Grand Tourney, and Val Royeaux was disappointing in DA:I, but Orlais provided its most typical delicacies: a palace, a ball, the Game and fashion combined with assassination attempts.