Wasn't his birth the result of a rape or abduction of an elf woman, maybe even a gray elf woman, by a drow raiding party? Mind unclear, gave the books away a few years ago.
Agree that his Vitality could be raised in the 1 point per level range to reflect his being a "buffer than average drow."
Do I hear echoes of your Blademaster Variant?
"Stand and Deliver!" Of course, mine silly request for a loot got you killed, OOPS! My bad.
Agree on the Crushing Blow and Open Wounds and Deadly Strike focus.
Agree on the thrown weapons, and am undecided on his bow issues. He may be a drow, but does he not take up the bow when he becomes a Ranger?
Which Drizzt are we looking at here is I guess the question: the one who lived in the underdark, or the one who lived on the surface?