Of course I can control the writing staff! I have the mystical Staff of Controlling the Staff.
In Season 4, everyone will have nearly as much personality as King Sombra, the episodes will have the cast supporting stuff like homophobia, terrorism, and killing the poor, the entire voice cast will be replaced with talentless soccer moms (and Discord will be voiced by that Jason whatever guy), my self-insert
Mary Sue will be joining the Mane Six, Alicorns will become the new Saiyans (everyone who isn't an Alicorn is useless!), Pony!Hitler will be a major good guy, and the show will be animated with Etch-a-Sketch.
Also, there will be one episode done with all the original stuff (voice actors, animation, personality, etc.). Rainbow Dash meets Sonic Gear, the pony who supplies electricity to all of Equestria by running in a hamster wheel. Desperate to have someone to race against, Rainbow lets Sonic Gear out of the hamster wheel. However, Sonic Gear gets away, and Rainbow Dash must prove herself by tracking her down and stopping a rampage. The episode would end with Doctor Whooves going in the wheel and supplying power to Equestria, only for everything to be Optimus Prime's dream.