Originally Posted by
Keltas
That's not why people are calling it a filler expansion though. It's because it had practically no features on the announcement. Instead it had a couple "big" promises (like "we're gonna fix the classes!" with no actual direction or info about it) and only one new gameplay loop, the tower. While they announced less dungeons, no class, no race, no ARs, and no new class abilities.
Obviously they've made some comments in the interviews and whatnot since that show there may be more to it, but that's why people keep calling it a filler expansion, regardless of how correct or not they'll be in the end. We might end up with tons of new abilities, awesome mega dungeons, and it might feel awesome in the end, but the announcement was so barebones by itself that it felt like filler.
An example of something they didn't talk about but apparently are doing: World quests are getting revamped completely. In the second day panel one dev said they are working on "World quests 2.0" and overhauling the entire system. Most people didn't hear that and they've been avoiding talking about it, but that's a major expansion feature they could've sold people on.