We should be excited any time we have a brand new monster introduced. I am very happy when we get a break from Daleks, Cybermen and Angels (oh my). Add to that a perplexing oxymoron of a cute smiling happy robot that is apparently scary and I am ready to go.
Now to the reality. "Smile" was more disappointing to me than "Pilot". I can excuse the first episode since it was basically an (unnecessary) origin story. Origin stories are always full of prose and relatively slow. I was hoping smile would pick up with the twists and excitement.
I was sorely disappointed again. First thing they did was dispose of the comic genius of Matt Lucas, making 3 part banter impossible. Next we see the tiny bots ala Big Hero Six and the white emoji bot that strongly resembles the robot from Hitchhiker's Guide.