He appeared in both BG 1 and 2 so it would be almost weird not to meet him in 3 no?
I think its not too likely, and its for the worst possible reason. The trademark and popularity of Drizzt makes it much more difficult to place him in any other properties except in a referential sense unless you have a frumpy board of directors approve it after agreeing to licensing and merchandising and restrictions on use etc.
Because you could kill him in Baldur's Gate 1, and people would lose their ever-lovin' minds if they allowed that these days.
And while I would GREATLY enjoy adding the tears of Drizzt nerds to my growing collection - the reality is it would be pretty impossible I think even if they could make it make sense.
I mean the first mod released would be the "kill Drizzt" one.