I always thought it would be cool if you took all five Guk zones and stitched them together into one massive contested zone. That would be awesome.
Well, as someone who loves huge non-linear contested zones (favorite zones are Sebilis, Skyshrine, Kael, and Sol Eye), this needs to happen! Seriously though, I've got no clue how difficult it would be to do this. That's a fair decent amount of zone space to fill and aside from Outer and Inner stronghold with the obvious connection point, I have no idea where you'd connect the rest.
Fabled EH would be nice as it is a huge zone as well as maybe a Fabled VP other zones that would be nice would be the 3 raid instances in DoF (courts, gates, and PPR), Castle Mistmoore (lag not included) Sebilis, Chardok
If we do get a Fabled Emerald Halls down the line, any chance of a new fun cloak? Glide, Featherfall, and +50% out of combat run speed all on one item :3
Halls of Seeing was Kingdom of Sky . . . at least I remember zoning in from Tenebrous . . . EoF would be stuff like MMC, Clockwork Menace, etc. Perhaps one of my least favorite expansions because it really did everything, but did nothing well.
The lower your goals, the more you can achieve is what I always say, I think you win on that one :\. Before we get to EoF any chance we'll be seeing Mara stuff, such as a Fabled Cheldrak?