LM3 is my personal GotY. I really enjoy it and the local campaign coop is greatly appreciated. I've been playing a lot with the kids. Speaking of which, people complaining family friendly games are too easy crack me up. Might as well complain Pixar movies don't have enough sex and violence.
Look I don't disagree Nintendo games tend to be easier than Sony/MS, but that literally is the point. Kirby is coop, LM3 is coop, Mario Odyssey is coop, Yoshi's Crafted World is coop. As a parent with young kids having accessible (easy) couch coop games is amazing. Not everything should be aimed at the hardcore audience. Kudos to Nintendo for realizing there is more than one demographic out there.