Here is an idea that I had.
Central park (whatever is left of it) covered in fog in the middle of the night (this idea was inspired by a suggestion my friend made).
possible support bonuses:
Max radar
Ultra nano vision (over power your nano vision for 30 seconds so that cloaked enemies appear as clearly as uncloaked ones)
EMP blast
Max nano suit.
My friend's suggestion:
An deserted/haunted house in the middle of the night for hunter mode.
Is it just me or do we need more night maps in C3?
I hope to see some of the great ideas you guys might have.