Blizzard isn't doing 1 tier annual expansions anymore. WoD was their first and last attempt at that. They realized it wasn't fun and and players didn't want annual expansions after all.
They said at Blizzcon that Legion is going to be a normal Cata/MoP length expansion.
Has OP ever considered being a word smith for a political party think tank? 'Betrayed' is like calling an opposing parties administration a 'Regime', because the Presidents 'Regime' just sounds evil as opposed to the President's Administration.