Here are my two cents on Derek's death, Patrick's departure and Shonda's shenanigans:
I am not as outraged as others but sure she could have handled things differently. Derek could have stayed in Washington, leaving Meredith single and maybe looking for love (or not), only to reunite with him in the her last scene on the show (like Carol Hathaway and Doug Ross). The fact that Patrick tweeted a picture of himself driving and holding his cell phone (was he tweeting? whatsapping?) and that Derek died because he was driving and looking for his cell phone seems very vindictive and petty. Just like with TR, she literally threw his character under the bus.
I don't hate her and I think she is a great storyteller even though she lets real life stuff get in the way of good fiction. Oh well 11 seasons is a pretty good run. If she's smart next season will be the last, just one more season to give a proper farewell to the characters we still care and maybe bring some of the old timers that left without a proper goodbye.
I personally don't give a damn about Meredith's long lost sister and the new interns. No one wants to watch a show with these people. Hell, even Bailey, who used to be my favorite early on, is now insufferable.
So Shonda, just kill this puppy. I am not nor has ever been a MerDer shipper but they were the heart and soul of this show. I don't think many will tune in after this. Just give these people a proper exit.