Imagine just walking down the street, and then you bump into...
It's pretty freaky, right? I mean well done, sure, but I think I'd just be freaked out seeing something like that. It's like when people use the plastic "anime face" masks instead of just using their own face for cosplay. It just freaks me out!
Lego cosplays don't freak me out as much when they just have a boxy body.
Or when they go all out and turn themselves into ACTUAL LEGO people, full body!
Though the human hands poking out are a big creepy, too...