If they want to have people grind for something to gain access to content, it should stay accessible to all people involved. End game extreme mode dungeons should not be about getting the best iLvL loot, but getting unique rewards and pushing oneself to prove ones ability in a team. By the time people reach end game everyone should be on an even playing field so they can do whatever content they see fit without being restricted by group skill just to get access to content. Right now they have it set up so that people spend way too much time in the same dungeons having to gear up and get ready for the next set of content, especially when the standard pattern is to make the older gear much easier to get anyway once the new content is live.
Glamouring is a really great idea. The development team just needs to leverage it to full potential. Also, they need to realize that if people are not running a dungeon as much anymore because they've ran it a lot, the answer isn't to try and find ways to keep people running the same static dungeon. The answer is to find activities that players can do throughout the game so they have variety and not just implement them, but reward players for doing them with the top of the line currencies.
