Full Lucas

When a once legendary filmmaker lets the success get to his/her head, and starts making mediocre films that don't measure up to his previous work. They either a) Make films within their own franchise(s) that completely ruins said franchise, or b) make other original films that suck and leaves audiences wondering what the hell happened to these once visionary directors. This is in reference to George Lucas, who (after letting all of his success get to his head) not only ruined the two franchises he created (Star Wars and Indiana Jones) but then made an awful film called Red Tails (2012).

Examples of going Full Lucas include:

Ridley Scott (With Prometheus, Exodus: Gods and Kings, and Alien Covenant)
Peter Jackson (With that bloated, effects-driven clown car that is the Hobbit Trilogy)
James Cameron (with Avatar and its impending sequels)

Film Buff : "I can't wait for Dunkirk! Christopher Nolan is the best director working today!"
Me: "I agree. But I hope he doesn't go Full Lucas."