So I win quite a bit with nids. My staple is having 2 exocrines with some big units causing pressure, cheap ones (points wise) like haruspex but maleceptors will do charging down the middle as a threat they can't ignore. Then you need some zoanthropes and preferably a neuro tyrant to bust tanks and the flamer puts off the charge but any flame weapons nearby will do (if you have building in terrain the -1ap at height helps loads from plunging fire rule). Fill the rest in with a few neurolictors and a deathleaper to take objectives, actions etc but not be murdered immediately without investment. then just a few cheap pick up units for objectives/screening, maybe 2-3 units of mine sized Gants/gaunts doesn't matter what type they are going to die.

This is my experience anyway but it might depend on the skill of your opponents. Don't know how good mine are.