The first time I saw a Frost Troll, I said, "Oh, look, it's one of those weak things from Oblivion, but white. Time to sleep." I barely survived the battle. Now, each time I fight them, I use my best equipment. I had to turn down the difficulty, just to nerf them.......and those Dragon Priests. Those Draugr Wights are pretty though too.
Sounds like you will have some fun with the Draugr Scourge, Deathlord, Overlord, Death Overlord and Scourge Lord all which are(as I have experienced it) far more powerful than the Wights(and very fond of using the Thu'um against you).
I addition too my earlier post I fear the higher ranking draugr(deathlord+) when they wield bows. Bastards takes 90-95% of my health with a single shot with their infamous ebony bows.