I'm holding on planning class stuff until after I get to talk to Ambrose about the possibly being a Drow or Drow based race thing. From my investigation, the common Drow of Eberron are different from the norm. But there is another Drow civilization that could allow for things like Driders and potentially other Drow-hybrids to make an entrance. This is taking the default fluff before any alterations for this game are made of course.