I think southern NH (especially near Portsmouth) ticks a lot of your boxes here. Easy access to gorgeous walkable nature, very good legal and cultural climate, some fun little cities on the coast, very convenient bus access to Logan as well as Cambridge/the Red Line (I used to commute into MIT every day), a preexisting somewhat aligned cultural movement to tap into in the FSP, etc.
Honestly I think I could go down the list of priorities and make a case for each aspect but I think the best case to be made for the area comes in seeing it first hand. If anyone wanted to come see the region I can promise you'd have plenty of options for where to stay, people to meet, and places to see.
I think southern NH (especially near Portsmouth) ticks a lot of your boxes here. Easy access to gorgeous walkable nature, very good legal and cultural climate, some fun little cities on the coast, very convenient bus access to Logan as well as Cambridge/the Red Line (I used to commute into MIT every day), a preexisting somewhat aligned cultural movement to tap into in the FSP, etc.
Honestly I think I could go down the list of priorities and make a case for each aspect but I think the best case to be made for the area comes in seeing it first hand. If anyone wanted to come see the region I can promise you'd have plenty of options for where to stay, people to meet, and places to see.