Thank you all very much for the critique.
Frankthedm: Excellent post. I really appreciate your pointing out the tactics of the enemies my character will face.
Nail: My bad, you're right. I thought the complete right up would suffice.
Dontpunkme: Exactly. But where your build has more feats, mine has more skirmish damage... my TWF thing is more character flavor... cuz I'll be the first elf ranger to wield twin scimitars... uh.. anyway!
My goal with this character is to remain unseen and unnoticed. When the battle is joined, I hope to move swiftly to the most important bad guy on the board, and then put the kabosh on him promptly. After which I will move into a position to offer my teammates a flank or, or continue to move into concealment and resume stealth action. By taking Swift Hunter, ranger and scout levels will stack for purposes of fav. enemy and skirmish damage. Swift Hunter also takes care of that pesky, "immune to crits" for favored enemies. Skirmish will apply to all attacks in a dervish dance, later improved by improved skirmish. That's like, 5d6 per hit at 10th...
I also plan to fight as assymetrically as the Drow. I too hope the DM runs the drow very much unlike "orcs with con penalities". However, I would also they that not every drow is as sophisticated as the main drow characters in Salvatores novels. But whatever.
At and around 10th, he'll be hitting for 6or7d6 +9or11-ish, and he should hit once or twice every round, and score a crit every other round-ish.
By 21st, these three attacks per round will become 16! per round, skirmish damge will be at 6d6 per hit, add 3or4d6 for the weapon and some magic to that, and 2-4 of these are statistically crits (maybe, I'm not at the point of doing the actual stats, just a guess, 15-20 crit range and 16 attacks?). And this lasts 12 rounds, and can be used once per encounter.
So that's the idea. This character utilizes stealth and a flurry of attacks to levy brutal damage against precision targets.
But maybe it's not that brutal? Thoughts?
Thank you for your insights, I really appreciate it.