Well between the Q&A (Check Gaarawarr for a transcipt or Bruglir for a recording) and the Buffed.De interview Carrie has pretty much ruled out re-introducing the lost cities back into the game.
Which is kinda a shame. I wasn't around for the Beta so I've never seen them or had a chance to poke around in them. :-(
Personally I think they should meet some where in the middle, add them in as Instances only ala IC/Aldorf Siege and have them unlock when ever the relevant pairing locks down instead of the current system or Empire/Chaos + Elf = IC/Aldorf unlocking.
My thinking behind this is it would add some variety (never a bad think in my book) to the city sieges instead of it always being IC/Aldorf for the end game and hopefully spread out the Zerglings with the opposing force being able to split and counter attack for a different city across the pairings. It would also take advantage or the current system with Orvr opening up during the current city sieges giving multiple targets and something to aim at.
Sadly you'd probable need some kind of incentive to get people to defend threatened pairings rather then just pushing through a undefended zone....Perhaps increased rewards for defense in the outer zones in the form of either a generic Renown increase for the defensive side (So Order in Reikland/Kadrin Valley/Eataine and Destruction in Chaos Wastes/Caledor/Black Crag - combined with the Against all odds would be a pretty strong reward) or increased lock rewards for these end zones (Less keen on the last idea and as would probable led to increased Zergs concentrating in one area rather then spreading out)
So....was just something that I thought might have a impact/salvage the old cities/add some variety...kinda works in my head but what do other people think?