Once you start having refueling stops, you're losing a lot of the benefits to supersonic flight. Many of the inefficiencies are in the subsonic range and now you're going to be in queues for takeoff.
The airports where one might refuel don't necessarily have to be big congested megahubs. Boom's a small plane, I wonder what the runway requirements are?
The Boom plans to land at 185 knots/213MPH, comparable to a 737-800. They probably need a fraction of the distance to stop though, since the plane has about 1/3 of the seating capacity.
Wouldn't be so sure. Stopping depends mainly on how good the thrust reversers are. Wheel brakes will only take you so far (and being lighter doesn't meaningfully help you.. lighter weight means less traction.
Airliners are required to be able to land with reverse-thrust inoperative: reversers are useful for shorter taxi times and reducing brake wear but they aren't essential.
Yes I see what you mean. I would be curious to see some estimates though(I'm not competent enough to try that) - how much time, if any, would you save, compared to an average flight, even taking the necessary refueling stops?