The number starts dull--do something a little more interesting with that vocal chorus, Sutton! you are singing some of the greatest lyrics EVER WRITTEN! enjoy that, at least!--but it get thrilling when Sutton starts to dance with the line of yummy chorus boys.
And it ends spectacularly, with Sutton taking a sure-to-be-thrilling high note at the end. (I can hear Ethel smacking Cole in Musical Comedy Heaven and saying, "why didn't you give ME that note? I coulda hit it--all the way out to Hoboken!")
Kathleen Marshall remade "Too Darn Hot" into a spectacular dance number in the Kiss Me Kate revival, which was no small feat, given the Hermes Pan/ Bob Fosse version danced by Fosse, Bobby Van and Kurt Kasznar in the movie. I can watch that number over and over again on the DVD of the London production and completely forgive her for the Roundabout Follies.
So they may be on the way to doing the same here.
Sutton just has to STOP pacing herself and put out at the beginning of the number what's she's putting out at the end.
The stakes are high here. This is musical comedy. The two most glorious words in the English language. (To quote 42nd Street.)