Meh. Too gimmicky. Nicole Kidman plays a joyless Lucille Ball with all the drama but zero humor. William Frawley and Vivian Vance portrayals, in contrast, seem spot on. (at least how I imagine them to be).
The dialog and story are at times too silly to be believable. I was acutely aware of how much botox and/or plastic surgery Kidman has had, which was a big distraction for me.