Regarding UMaine’s program, I think they wanted to compete more with the flagships of surrounding states, drawing more students to Maine as their declining high school population is more pronounced than other states. Massachusetts students are particularly taking advantage of it is my understanding. At first they didn’t include students from Rhode Island but I guess they are now. There was an interesting article here: https://www.insidehighered.com/news/2017/05/11/university-maine-sees-slower-growth-second-year-flagship-match-program . Hope its not behind a wall though – I have access to this site at work.