Bellmawr? What's that? I grew up in New Jersey and Bellmawr is meaningless to me. Sounds like the next Brewster, NY, as control cities go.
Del Mem Br might be weird but it's where the Turnpike goes. Camden is way off the Turnpike; I'd use "Wilmington, DE" if a control city well off the road is acceptable. The best reason I could see justifying signing Camden is to promote Camden, which, while clearly a New Jersey state goal to a fault, shouldn't be the motivation for a control city. If it's going to be Camden, it should instead be Philadelphia. 78 East is signed primarily for New York, not Jersey City.
Being that the State Aquarium is in Camden, among with other Waterfront attractions I can see why they signed Camden for the Turnpike, but I'd have a feeling most Aquarium users would take either 295 or they are coming from Philadelphia where they can take 676 from the get-go instead of the Turnpike. The pullthrough signs are new though for the Turnpike Authority so signing Camden when the Turnpike goes into the Camden area isn't the worst thing I guess. Unlike Trenton, there's really
nothing to do in Camden but go to the Waterfront, because most of the city isn't exactly a bustling place to begin with.
Also, the Turnpike will have Trenton as a control city, and it doesn't go anywhere near Trenton, but it does provide access to I-195 which will take you directly to Trenton should you follow it all the way to the western terminus at NJ 29 and I-295. In the case of Camden, you can take 168 all the way up (albeit you will go through some
sketchy areas) and if you kept staying the same road you would reach Camden.
I wish I can answer this one for you better, but I have not lived in NJ for almost a quarter of a century. From what I hear on here it seems that NJTA is going MUTCD.
Yes, that is true. The FHWA pretty much forced them to, but I hope they continue using some of their signing practices on the MUTCD-spec signs.