Is it normal that i'm considering bringing dolls into our sexual activities?

I occasionally collect various dolls, originally intended as an investment (unopened in their original packaging). My most recent collection is the DC Superhero Girls dolls, based on the internet cartoon of the same name, featuring teenage versions of superheroes, mostly females.

I find the dolls themselves extremely pretty and am considering buying an extra one to open and convince my wife to allow me to bring it into the bedroom with us. Specifically I'd like to have my wife hold the doll by her legs and rub its face against her clit until she cums. The thought of my wife using a toy that looks like a young pretty superhero girl really turns me on.

Is this normal or am I weird?