Ok, lets explore a little if people will indulge me..
Reasons for Drow to goto the surface. I am deliebrately basing this on Menzo based Lloth worshipping Drow.
To kill elves (yes this is an IC reason). i.e. the war party Drizzt participates in. This would mostly be a sort of rite of passage for groups of Mid level Drow led by a "teacher". I personally think a visit into Shilmista or Tethyr forest would answer this one fine. No player elves need get involved unless they want to.
To raid ancient places to gather powerful magical items. Basically a party based treasure hunt. Drow are as greedy for shiny toys as anyone else and the potential gain from a raid into for example the old school of wonder would be much to there tastes. They would also need to recruit surface guides leading to some interesting RP.
To aquire through trade things they can not easily get below. Surface access is not vital as such things can be got through Skullport but as Gilain has stated a somewhat easier route might be nice. And the trade does require the Drow play nice. Again a lot of RP.
To punish heretic Drow, for example the ones in Drow tower. Or to chase down Drow who goto to the surface unauthorised by the priestesses. Another variety of war party but with a specific faith based aim.
To start and further plots and schemes to weaken there enemies i.e. The Drow helping the orc king in some FR books. Basically to RP with other evils and scheme up nasty plans.
In all cases there is a definite short term goal to be achieved. Because to make it clear Drow do not like the surface, it is painful and scary place for them ( though they will not admit the later). There has to be a very good reason to take the great risks the surface entails to any sane Drow.
Duranamir, who has seen the surface and did not like it !
menzo, Ched Nasad and Skullport
Re: menzo, Ched Nasad and Skullport
My thoughts entirely....There are a few places on the surface that Drow are operating in...Perhaps it is time they were checked up upon?