If this kind of stuff interests you I recommend checking out this plan for electric rapid rail using the Northeast corridor right-of-way for dedicated service to a dozen stops throughout RI, I thought this looked great: https://archive.org/details/ri-rapid-rail-final/page/n1/mode/1up

Here’s another one that goes more in depth about a dedicated RI service using the NEC, there are several other examples including the Shoreline East service in CT: https://transitforwardri.com/pdf/Strategy%20Paper%209%20Passenger%20Rail.pdf

Honestly this makes more sense to me than trying to take a bunch of land or lanes for an entirely new ROW for light rail, imo. The Paw/CF station unlocks so much potential, exciting times!