I was extremely disappointed with the epilogue. For starters...
The sequence with Hien was, personally pretty boring. I don't mind this type of content, but fleshing out their hotbar would be nice. I personally don't find it fun to press 1 button throughout the fight, with the occasional 2 and 3. Not saying to put the whole toolkit there, but at least something other than 1 attack button would be nice.
With that being said, the scenario is just pretty bad. An Ascian that could fight and defeat multiple people by himself, ready to land the finishing blow on us, was distracted by another person... who we haven't heard of in a long time, yet was conveniently there just to save us and nothing else. Cool.
We also learned nothing that we haven't already known, nor was anything even concluded. The only thing we got that is leading us toward the expansion is literally "Go to the Crystal Tower. I don't have time to explain why I don't have time to explain, just do it".
When the trailer gives you more information than the quests that are suppose to lead up to it, then that's honestly some pretty bad writing.