It's going to be so annoying and trolly having a global clone randomly popping up to spook you. 1v1ing in the Jg? Leblanc clone is there and you waste flash thinking she can kill you! Chasing a low health enemy while you yourself aren't looking to hot? SUDDENLY LEBLANC CLONE DASHING AT YOU! You flash away thinking it was her and now the chat is spamming "Lol"
######Oh boy.
You send a clone to make the top laner think they are getting ganked. THEN YOU ACTUALLY GANK TOP!
You send a clone mid lane to make the enemy think you are in lane. THEN YOU CAN STEAL BLUE BUFF!