A roundabout would be very unwelcoming to pedestrians as traffic essentially would never stop. I don’t think there are any good answers for Andrew square but they should make Dorchester street one lane each way and install bike lanes and trees
I went thu and spent some time in Quincy center recently and the changes there are dramatic. I appreciate the influx of capital but the center has really lost its character. It was necessary, I just wish it was handled with a little more grace and not just slapping 5+1s all over the place