Where is the "never before seen content"?

[Moomba33]

Before we used to get two new dungeons to grind in Expert roulette every so often. Now, we have to wait twice as long for that new content, and in between we get more of the same content with MAYBE once in a while a different dungeon. When people already MAYBE log in daily to run that thing, it exponentially worsens burnout. Go back to where the game forces you to take breaks, rather than permits it.

To add on, we used to get 3 new dungeons in Expert per patch back in ARR (one brand new and two hard modes).
It's been a steady decline in the number of new dungeons as the game has gone on and some people feel we haven't gotten enough new content to justify it. How much you enjoy the new stuff that has been added will affect your perception of course.