This is my first post here, and I don't want to make a faux pas by posting on the wrong part of the forum. I hope you will bear with me.

I have a hypothetical campaign question for you, outside of Forgotten Realms. We play the long defunct BIrthright campaign setting, much expanded over the released material, and with a number of house rules. An Underdark is hinted at in two modules from canon (sections mapped out) "The Sword and Crown", and "Warlock of the Stonecrowns", and drow make a very brief appearence in the latter module. The campaign setting was killed off by WoTC before a lot was developed officially for it, and a lot of our expansion of the setting is based wherever possible on Rich Bakers design notes.
With that background information, we have always been fans of the Drow, and so we incorporated them into the setting wholesale, with the goddessess and gods of the Drow of the Realms. In this setting. Eilistraee and Vhaerun are at least superficially cooperating with each other, and have engaged in some behind the scenes motivating of NPC's and select PC's to forward some of their plans for their followers attaining the surface.
In our game, a good-aligned human regent was 'put in the path' of several followers of Eilistraee. This regent befriended them, and having compassion for their peoples plight, has used his considerable resources to,create a trade route to one of the Drow cities,(through third parties) to one particular house, which reaped the bulk of the financial benefit. After a while the trade route was surreptitiously turned into an 'underground railroad', if you will, giving the godesses followers in that city (and Vhaerun's) a route to the surface and freedom.
This route has lasted in our game the best part of a decade, and several hundred followers have attained the surface at least, and have been provided by this regent with forested land, created a village, and temple, etc. More have attained the surface through a campaign arc that had an important NPC kidnapped and enslaved in the Underdark, with a concerted effort by followers of the goddess and humans to release the initial NPC, along with a number of captives, and other followers of the goddess. This was accomplished in a series of successful raids so that now a few thousand of them have established communities within friendly human kingdoms on the surface.
So here is the hypothetical question for those experienced priestess characters of Elistraee . In such a situation where a few decent sized surface settlements exist, inside human kingdoms friendly to them, having achived that much, what would be their next step? It is highly likely, due to some recent infighting in the Underdark that the"safe" route to the surface will likely be closed. At least one priestess has the human regent in questions ear, and sits in his royal council, as does her drow husband. What would they possibly seek to have him do, to continue to aide their people? What would your characters do given that opportunity in your campaign?
Just as an end note as to why followers of the goddess were able to find friendly humans. In our campaign the drow were expelled from the surface more than a thousand years before the humans arrival on that continent, and in that world, humans and surface elves had sporadic hostilities for centuries, and little friendly interaction, so the humans did not even know of the drow until recent decades, and thus lack the predjudice specific to the race as found in Farun. The first interaction the regent in question had was with a follower of the goddess following her dogma, which of course made a strong, positive impression,
I look forward to your responses.