Races of Ala Mhigo

[Balipu]

Probably not a ceiling, but the early concept art included in the 2.0 artbook did depict it with fairly high walls and a number of Imperial fortifications, yes.

That was rather early visualization, though, and it's possible the concept may have changed since then (especially given the design of Rhalgr's Reach). I wouldn't expect folks living under a rotting pizza until we get to Garlemald itself, though. :V

EDIT:

Also, we actually have a racial makeup of Ala Mhigo in the book: 60% Highlander, 10% Hellsguard, 10% Midlander, 10% Sunseeker, 10% "other". So aside from Highlanders, expect a decent number of Roes and catgirls, along with some Midlanders and Garleans.

What are the chances "other" means: New race we haven't revealed yet?
It would have been a funny little oversight if the population list included Viera or Hummingway or anbything that might be considered a new race.