Ahead of an expected D23 X-Men cast reveal, Sadie Sink thinks it's a "smart choice" to have a "younger generation of mutants" in the MCU

Jean Grey actor Sadie Sink thinks it's a "smart choice" to have a "younger generation of mutants" for Marvel's upcoming X-Men movie. Upon being asked by Entertainment Weekly how it feels to have a universe starting with Jean Grey as a building block, Sink replied, "It's really cool. Also, I think it…