I guess this could be a good place for people to look for pretty good strats to beat NM's for the new content to help each person's success improve. Feel free to add your experiances here to assist those that would need he's some post from others and myself.
Nerrivik strategy (H-10) (Foret IV Boss)
Credit to:: Carbuncle.Chibiclone
I did it in a pug and our strat was to have 3 BRDs all soul voice then swap parties so all 3 parties had 6+ SVed songs. On the pop we had 2 BLUs use back to back Elemental Seal Absolute Terror (I was 1 of the 2 blus) so that it would be frozen until it's lanterns were broken and have no risk of charm going off early.
The thing was already down to like 63% by the time the double AT was over (about 45 seconds) and was dead very fast, not sure how fast but it was definitely under 5 min.
So yeah, basically zerg the crap out of it.
Edit: Oh yeah, I also made sure I had all 4 BLU stun spells set to further help keep it under control after the ATs were over. Both Blitz and Temperal had no trouble landing and applying their stun with standard DD gear and maxed skill. Head Butt and Lunge did have trouble landing though (I think just because they are physical and delve's high evasion).
Credit to: Fenrir.Sylow
We zerg it with Scherzo up
Tax'et (G-10) (Ceizak Battlegrounds)
Spam dots until it Exuviation 20 times then continue w/ your basic brd/cor rotation and zerk.. barfire help also. one pld to hold the NM while dd's buff for the zerg.
Transcendent Scorpion (I-10) (Ceizak Battlegrounds)
Normal Zerg Cor/Brd rotations has high evation so you'd want to use acc food one pld to hold the NM while dd's buff for the zerg.
Hope these few tips would help you get started. Good Luck!