Half baked, it has to be said.

[Vidu]

Another problem I have is content that is popular with a large burst of activity at its release then dies in a few weeks time. There needs to be incentives in place to carry this content through for months at a time. People rush through content all the time, this is to be expected.

I'd be curious to know what you'd suggest as an incentive that makes people come back and re-do old content over and over again even a year later? - and that without turning it into an obligatory grind for everyone!
Or, in other words: What would make you come back to this "casual content"?

I'm mainly asking because dungeons already offer quite a bit of rewards: By now each dungeons drops music, minions, (potential) glamour/gear, tomestones or exp. What else could you put in there that would make people come back even after several weeks - assuming you dont want to have a very low droprate on a rare item (thus turning it into an RNG-grind) or ramping up the prices of tomestone-items (thus turning it into a regular grind).