/signed for more slots (dont care how
Anet - Nc Soft subscriber income should be more than enough to handle some additional storage. So please no more agreeing with the idea that they will suffer to provide an easy and much needed change to storage. [3mil buyers x ~50 Euro = more than enough].
Extra storage should come free with an expansion (as happened with Factions, or with in-game credits - I do not support paying real $ for a solution. If Anet need to make it hard to get, then pay for it with a hard to get reward. Just don't make it an end game reward lol
Some ideas -----
Provide a collector item tab in Xunlai - stackable so less bytes, and shareable between characters, so no more hunting for the lost pulsating growth.
Give each Hero (for each character) a bag/pouch - just enough for some weapon and rune choices. Its really painfull keeping role kit for all the heros in your own chars limited slots
Give the vault an extra page of slots if 5 characters "hand in" 5 x a one time only reward. Make the reward based somehow on character progression or something related to how often or well used the character is. Much like the titles. For eg, if 5 chars each have a first level title. [And no, I don't mean 5 characters with kind of a big deal

!! ]
This way its part of the story, and you get one more page for each 5 active characters. ie mules or less used characters wont get the reward.
Yes this last idea does reward the active multiple campaign owners, but if you only have 4 chars and one campaign then you probably dont need more storage any way.