I think the whole idea of dividing the game between casuals and hardcore is wrong in itself. The level of progress, whether experience points or rare items, should always depend on the skill of the players, not on how much they play and what their style of play is.
The wrong concept of a player dualism stems from the necessity to allow casuals to obtain the same things hardcore players obtain at any cost, to cater to the biggest player base. Such a thing is simply laughable as it's very easy to base rewards on player skill. It's just not in their interests to do so.

That said, i suspect the rep aren't deleting the threads because they get off topic, but simply because they want to cover up the very unpopular idea of the WoW-like progression Yoshida mentioned and many disagree with.