I was just thinking about Eyes of the Lich Queen, which I have ordered but not yet received. The adventure is set in Eberron for levels 5-9. It is not news to anyone on these boards that this adventure is niched twice from the get go. First you need a party in Eberron and secondly you need to be 5th level to be able to use it.
I dont think Wizards will give up their business model of supporting different settings for their game. I don't now why they keep this up but I guess they try to cast a wide net. (For me I'd just the same have D&D be the setting.)
So I wonder: In 4th edition will levels be removed? -Frankly, what is the importance of levels? If there were no levels every module would fit every group. Every monster would fit every group and it would be simpler to target players with new feats, prestige classes and challenges if there were no levels involved.
Of course, I do enjoy levels in play but not enough to justify their existance since they are an obstacle when it comes to buying products.
Naturally you need to have some model for experience and growth in the game but I'm sure the designers can come up with something that works if they were ordered to*. I think Wizards really want to sell Eyes of The Lich Queen to every group with a game in Eberron, not only those whom just happens to be at 3-4th level.
What do you think, will levels be the next sacred cow to get taken out and shot?