Ok, so flipping through various codices, including
CSM,
SM, Dark Angels, Blood Angels, and Space Wolves, I've decided that Blood Angels would probably do the best job impersonating Night Lords.
Fluff being first and foremost, here is my list of units / upgrades I am against
Hand flamers, infernus pistols, any named character, reclusiarch, chaplain, sanguinary guard, Techmarine, Sanguinary Priest, Death Company (and dread), baal predator, Vindicator, Land Raiders, Stormraven, most of the psychic powers...
I'm iffy on the magna grapple...
If you have solid fluff or alternate names / versions of something that would work for these units, let me know, i'd be interested to hear! Example would be something like Mephiston counting as the originator of the Night Lords, Night Haunter. But then, I think mephiston is cheese, so i won't be using him anyway
I think the two psychic powers i can really justify are Fear of the Darkness (need i say more? the name is exactly what the Night Lords are) and Shackle Soul, only it would be more revolving around the enemy so terrified they can't move, instead of bound to psykers will...
If i were to take a furiouso dread it would only have these two powers, to signify how terrifying it is, and i feel that's justifiable, no?
So led either by a terrifyingly armoured/winged monster (librarian with above mentioned powers..) or a captain, probly dual
LCs and jump pack
Troops would be mostly assault marines and sniper /
dccw scouts (ambushers)
Vanguard veterans, maybe some bikes, iffy.
Devs or predators for heavy support. I haven't decided which i think fits better... any opinions on any part of this would be great and much appreciated!