So you never played OKW before? That's to bad. Play them if you have WFA, and you'll see why kubel is the way it is and you will met people who will crush your "OP kubel startgame". Why? Because they were working to find solutions instead losing time on forums.
Why do people even bother defending the Kubel in its current state? Even with the changes to its on the move ability it is still over-performing immensely.