Saw the U2 show there on 2/2. First time I had seen U2 also. Great show by U2, but the visuals within the Sphere put it over the top.
I live in a major metropolitan area and we get a great number of concerts, and we take advantage of that by going to approximately 10+ concerts a year. As such, I don’t really travel to other cities to see performers, but if there was a performance of somebody I would see in my hometown and they were playing at the Sphere, I would definitely consider going to see them in Vegas, again for the experience.
I definitely don’t see the Sphere being used for one showing of any artists on a tour. The costs of creating the visual effects that would only be unique to the Sphere would likely be prohibitive for a one showing only.
I believe Phish is doing a 4 night run in March, and then Dead & Company are doing a 2 month residency this summer similar to U2’s run.