Having extremely high demand and very low supply has made all the prices of potions, flasks and elixirs to skyrocket. Preparing a full raid with flasks for BWL has become impossible. Not because of the high prices of mats, however, but because there just isn't enough of the mats on the server.
We are looking at a thousand raiders, if not more, and you can only see around 15 black lotus on the AH at a time. The price of it is ridiculous, but that's not my point. Everyone can farm thousands of gold. The point is, the supply is simply so little that it is even impossible to get fully prepared for raids. This has been going on for quite some time and we managed to live with it, however, now it's getting in the way of progression.
Sure, you could argue that we were supposed to farm tons of mats in preparation, but eventually those will run out anyway as it is impossible to supply the whole server with mats due to the extreme population.
My only question is, why do we have dynamic respawn rates for mobs and quest items, yet it is not implemented for herbs and mineral nodes? Faster respawn not blizzlike? Well, the population is not blizzlike either, why should other parts of the game that are directly correlated to the population be different?