Somebody made a mention yesterday about having differing tiers of difficulty for dungeons in a way similar to how WoW does things. I wouldn't be opposed to it. I think it's better than having 24 mans being the default midcore difficulty. This ties a little bit into my thoughts about the game needing new direction.
Let's be honest, everything feels so stale right now. They took a chance on Eureka and it worked for the little bit of time that people wanted relics, so obviously the devs are willing to delve away from the common formula a little. But we need more.