They've been doing the storylines since 2011 or 2012. But now they're planning twice that length of time in the future.
7 years ago 4th edition was just getting started. Had they planned storylines then like they're planning now we wouldn't have had the iconic war vs evil dragons to launch 5e.
While I expect that they can adjust and shift storylines somewhat, my main concern is that they're planning so far ahead without seeking feedback from the community or looking to the fans to see what type of APs are desired. It's slightly arrogant for two or three people to be planning the future of the game that far in advance. And annoying that it's pushing the fans out of the loop. Our opinion's don't matter because the decisions have all been made and no feedback was sought.
Arrogant? Okay.
While I don't think its the case, why couldn't WotC have planned out Tyranny of Dragons years ago? And maybe reworked it from a story arc designed for 4E to the new 5E? More likely, what if they had planned out storylines waaaaay in advance back in the 4E days? Why would that *prevent* them from creating a new story arc for the new edition? You talk as if the act of planning locks out being nimble and responsive, which it doesn't in the slightest.
And I don't WANT them to seek community feedback on storylines. Game design? Yes, and they have been doing an AMAZING job of that. But for stories, I want them to tell me a story that I didn't know I wanted to hear! When I read the Dragonlance Chronicles as a kid, it wasn't because I had been demanding a story about war and dragons, but once I started reading it, I sure as hell did want it!
If in four years (2019) a new King Arthur movie comes out and everyone is abuzz with thoughts of knights on horseback, crusades, Excalibur, and the like and WotC doesn't have a chivalric adventure in their planned list, then shuffling the order does nothing.
If, after five years of Realmshaking crossovers and heavily plotted storylines the fans really want a sandbox exploration adventure ala Isle of Dread, and one wasn't planned, then shuffling the order does nothing.
If Hollywood releases an awesome King Arthur movie, the last thing I want WotC to do is feel compelled to jump on the bandwagon and join the trend. Hollywood itself does this all the time and we usually get the one good movie up front and tons of tired imitations. I don't want that for my game.
But, if WotC had an Arthurian style story arc on the back burner, and decided to move it forward to capitalize on this movie's success, what's preventing them from doing this? Or if they got nothing Arthurian in the can, but decide the want to do it anyway . . . again, what exactly is preventing them from doing this?
"Hey, that new King Arthur movie is kicking it in the box office, do we have anything like that we can release to capitalize on this?"
"No, boss, sorry. We don't have any Arthurian stories to tell currently."
"Well, bump that swords-and-sandals thing back and make me an Arthurian D&D story stat!"
"Sorry boss, can't do it. We've already planned out our stories 7 years in advance, and this prevents us from creating new stories and changing our schedule. It's planned, can't be changed. Nothing to do about it. Sorry."
"Darn! Guess we are going to lose out on all that FREE MONEY!"