NJ seems fine about their freeways. I lived in NJ for the first 25 years of my life, and people generally referred to the NJ Turnpike as simply “the Turnpike.” In addition the Garden State Parkway was always referred to as “The Parkway.” Nothing will change that including the addition of a red, white, and blue shield to the non I-95 part of the roadway.
Just because North Carolina is going hog wild with renumbering existing freeways, doesn’t mean that NJ will. In fact they don’t want to go through the time and effort to hold meetings, apply to AASHTO, and spend money on shields. Heck they still won’t apply to AASHTO to first get approval for realigning US 322 in Mullica Hill and they still haven’t applied to get US 9 realigned to The Parkway now that Beesleys Point Bridge is gone for good and will never be replaced. Plus, I don’t think AASHTO knows that US 206 Bypass exists in Hillsborough Township. The last application sent in was for the US 206 alignment change at Netcong in the early seventies. Since then (unless the aforementioned bypass was submitted, that I highly doubt) no new applications were submitted to the feds.
If they won’t submit the paperwork on those why would they here. NJ is very fuddy duddy when it comes to roads. IMO opinion I think Route 24 should be an x78, but that won’t happen either even though it connects two interstate routes on both ends.