I was just pulling a large number of arena token items for a guildmate and it was so irritating to have to pull them one by one.
Just a small idea I had for HCS to consider is a multiple select option? So we can type the quantity of an item we want.
You could always have it bring up another message box saying "Are you sure you want to withdraw 70 xxxx?" just like when using potions to avoid accidental withdrawals.
Can't see a valid reason why you wouldn't add an option. So if I could get an admin yes or no that would be great. Something else to consider to the growing list of things after the app. 
