I have literally never thought about this before, but yeah... if you make Drizzt purple enough, Ryan Gosling would likely be near the top of my list. Chris Evans, Michael B Jordan. Tom Holland. You need someone with range for Drizzt, but you also need someone who can turn it on and off very quickly; John Barrowman would be perfect but he's too old for Drizzt, and now I'm going to be obsessed with seeing him as a live-action Jarlaxle until he's too old for that.
Another consideration is that you probably want shorter/slighter actors to play male drow, because it makes it easier to cast women who are larger than them to play female drow.
Another consideration is that you probably want shorter/slighter actors to play male drow, because it makes it easier to cast women who are larger than them to play female drow.