I'd like to see NJ-4 become an Ocean County centered district with parts of southern Monmouth and get removed from the Trenton area entirely.
Then NJ-3 can be focused on Mercer (Trenton) and Burlington counties, and NJ-2 can be the southern "Van Drew" district.
I'm also kind of hoping that a Republican district can get drawn up north, since I really think a 9D - 3R delegation will be a lot more stable than 10D - 2R going forward.
Pretty sure the AA district and Hispanic district in the NYC suburbs are set in stone, not much else you can do there.
If you want to do that, then making Gottheimer's district an R sink is probably the easiest thing, like this:
This gives you:
NJ 1: D+52 (Sires)
NJ 2: D+26 (Pascrell)
NJ 3: D+69 (Payne)
NJ 4: D+28 (Pallone)
NJ 5: D+19 (Sherrill)
NJ 6: R+17 (Gottheimer)
NJ 7: D+17 (Malinowski)
NJ 8: D+27 (Norcross)
NJ 9: D+27 (Kim)
NJ 10: D+8 (Watson Coleman)
NJ 11: R+24 (Smith)
NJ 12: D+4 (Van Drew)
Might have some VRA issues that can be cleaned up in NJ 1, and NJ 10 can probably be shored up a bit, but this is roughly how it would be done. Given Van Drew is in a (right-trending) D+4 seat, though, it might be better to unpack NJ 8 and get 10 D+10 or better seats.