I thought, haterobics, about Lucas Steele's remark and failed to address it. I agree that Howard Kagan probably wouldn't have proceeded without a star, and Groban was the star they got. His presence certainly didn't hurt the musical, and beefing up Pierre's part strengthened it in my view.
We are almost in a chicken-egg situation. Great Comet may not make it to Broadway without a star, but once you have a star, that creates a different problem. While the marketing needed the sort of approach adopted too late, I suspect the real problem was that the show didn't resonate emotionally with enough people. It did with me, especially the brilliant and moving second act, but even my wife and daughter - who thoroughly enjoyed the show - didn't like it as much as I did. Hamilton, a more conventional musical despite the rap lyrics, converted skeptics and became the must-see sensation Great Comet never quite managed to become. Comet may always have been destined be a beloved show with a larger-than-usual cult following and an unsustainable budget on Broadway.