I won't dispute that the major reason for bringing in Rutgers was a cash grab, but it was definitely more than that.
Another long term benefit of Rutgers is accessing the fertile recruiting grounds of NJ. I found an article on SBNation that counts blue chip football recruits (4* and 5*) by state from 2013-2017. NJ came in 12th with 41. I can't find counts for the other sport. But, using a different source (
https://www.ncaa.org/sites/default/files/2017RES_RecruitMaps-Final-20170613.pdf) here are per capita rankings for men's sport recruiting. I counted the states myself so I could have miscounted a little, but it's close enough.
Baseball - 11th
Basketball - 17th
Football - 11th
Soccer - 8th
Track & Field - 4th
Wrestling - 3rd
I know some of those sports don't matter in the big realignment picture, but it shows the full breadth of the athletes available in NJ. It is more than just $. I didn't see numbers for lacrosse, but I'm pretty sure NJ offers a lot there as well.
For what it's worth, Maryland had a higher per capita for every sport but wrestling, and that includes women's sports.