"I'm not sure Sutton could handle the Fosse choreography. I don't think of her as a Gwen, Chita, or Ann Reinking."
I'm confused by this statement. Even though both shows were largely tap-based, both of her Tonys were for dance-heavy shows and roles. While it remains to be seen if she has the Fosse sensibility (and we don't even know how it will be choreographed), it's not as though she couldn't handle it from a purely technical level.
I also think of anyone working today, other than maybe Jane Krakowski, she's a pretty good successor to Gwen Verdon. I was recently re-reading the Wasson biography of Fosse, and the way Verdon is described in performance reminds me a lot of Sutton Foster. She has that kind of winning spirit and vulnerability that Verdon apparently brought to her roles, and that seems pretty ideal for Charity especially. On paper, it's certainly a much more ideal fit than Reno Sweeney, and if she could handle that, I feel like Charity will suit her well.
I am a firm believer in serendipity- all the random pieces coming together in one wonderful moment, when suddenly you see what their purpose was all along.