How to keep old contents relevant

[Fendred]

Maybe the better question is "how do you make content that continues to be interesting to players long after its release?" I think going back to make finite changes to pieces of content under the current system is pointless because the act of renewing content in such a way is as unsustainable as simply adding another new dungeon corridor. The content needs some way to alter or change itself in respect to party composition or by shuffling "dungeon tiles" and "encounter cards" to create a somewhat randomized dungeon experience.