I would like to comment on a topic that really pisses me off.
While mining I have noticed that many ores have the stones and not the mineral. A rather bad practice since the ores do not reset if they are not taken whole.
I would like to know if this is a reason for complaint and where to put it since, at times, it makes it impossible to level up professions. It should force you to take the stone before the mineral to ensure that the ore resets
Players not picking up the stones to make the veins to despawn, and eventually respawn, is frustrating. I don't think anything can be done, e.g. making veins despawn 15 seconds after player's interaction with it ends.