Note there is nothing good about Luke having to turn himself in to nullify detection. This makes him a liability - not an asset! What turned the tide of the battle was Chewbacca hijacking a Scout Walker, not the fact that Luke was in the throne room. The movie should be called Return Of The Wookiee.
I like the sound of that. 😄
Fan edit time!
And TFA will open with “Chewbacca has vanished! In his absence the sinister First Order has risen from the ashes…” etc etc