I can think of several guilds and a few dozen people over the last year or so who have told me about how 'hardcore' they are, flapping on vent about it and subsequently buggering off to Frosty. A month or so later, they're back (very quietly mind you) and it's never spoken of again. Usually, their backside is being carried on the silver platter that it was handed to them on.
There is a wide range of issues and a wide range of solutions. I liken it to osmosis and at the moment we have some seriously bloated cells sitting over at Barth and Frosty and even starting to get some fatties at Aman and Jub. Blizzard *should* be acting as the cell wall shouting *you shall not pass!* once the other side is full.