I always thought that the Red Mountain region was kind of boring, and that there weren't much to do in connection with Ghostgate and that general region, before the last parts of the main quest that is.
It just occurred to me that Skywind might be an opportunity to remedy this. Maybe not as part of your main project, but perhaps as a separate mod?
You might think it cliché, but I think it would be a lot of fun to make Red Mountain a corprus zombie survival region, and to create more quests related to Ghostgate. In the original game you may run into a single corprus infected every exterior cell, and maybe an ash creature later in the game. Wouldn't it be cool to have rampaging hordes of corprus stalkers with behaviour similar to more conventional zombies; make Ash Slaves, Ghouls, Ascended Sleepers and Ash Vampires (the Dagoth Ur-looking ones) into boss creatures; buff up their toughness and write special behavioural scripts to reflect this? Something like the zombie bosses in Left 4 Dead. I'm not proposing to make a L4D minigame in Skywind, but I think recent zombie games have some things worth imitating for this update.
Later in the original game, as you progress through the main quest, you run into Ash Creatures in Ashlands regions outside of Red Mountain. This could be made to reflect the failure of the Buoyant Armigers to contain the Blight by having Ghostgate suffer overwhelming losses and damages, and this in turn could be made to depend on the player's success or failure in aiding the Buoyant Armigers.
Now I'm just thinking out loud. I don't have the competence or resources to do this, but I thought if I brought it up the idea might catch on. You may not want to change it as much as I suggested, but I'd be glad just to have the corprus behave more like zombies, which would seem to have been the original intention anyway.

I'd be definetly for
I'd be definetly for increasing the spawns of corprus stalkers and beasts in that region to almost - horde levels, as for quests and AI packages I'm not sure we would have quite enough time to implement this - I'd be thrilled to have that in though. And Red Mountain will already be more interesting in Skywind, at least from graphic point of view ;)