1) Allow all your characters to be listed while in game (who they are, what they are, level, where they are), and allow you to quickly switch to characters without having to logout, re-enter username/password, login again, select character etc.
2) Make character inventory space more manageable:
Inventory space spread across multiple characters should be more easily manageable. It's annoying to log in and out just to find out some character or hero just doesn't have that item you thought they had (imagine if you have lots of PvE chars and one of their heroes has that nice green zealous scythe equipped, but you can't remember which char and hero). I don't have that many chars (just the default) and I already find it hard to remember all that.
I don't know about you guys, but I'd rather play GW the game, not GW the Storage Puzzle Game (a combination of Memory and Klotski)

You should be able to list all the items owned by the characters you are playing - that includes items, runes, insignias equipped (weapon or armor) by the characters and the heroes associated with those characters.
Proposed columns (can click to toggle hide, sort asc, desc)
Char, Location, Type, Rarity, Description, Details, Qty, Value
Stackable items should be grouped together to the max of 250, each max stack has separate entry.
Example listing:
Joe1, Olias, Armor, - , Minion Master's Boots of Major Soul Reaping, AL60, 1, 0
Joe1, Equipped, Armor, -, Tormentor's Boots of Minor Soul Reaping, AL60 Soul Reaping +1 AL+10 Light dmg recv +2, 1, 88
Bob2, Backpack, Wand, Blue, Pronged Rod, Dark dmg:11-22 req 9 Blood HCT 20 HSR 20, 1, 184
Bob2, Backpack,Sentient Seed, -, 2, 24
Bob2, Backpack,Sentient Seed, -, 2, 24
Bob2, Backpack,Bone, Common Crafting Material, 20, 60
Xunlai Vault, Materials,Bone, Common Crafting Material, 250, 750
Xunlai Vault, Items,Bone, Common Crafting Material, 250, 750
Xunlai Vault, Items,Bone, Common Crafting Material, 250, 750
If the Details Column is hidden, you should be able to get details by clicking on the listing or hovering (and getting "tip/hint").
You should be able to sort items by type (sword, material etc), or rarity white, blue, purple, gold, green. If possible also allow sort by time placed in inventory of that character (add a datetime column).
Create a Xunlai Storage Upgrade that allows you to transfer items to/from other PvE char inventories and heroes from/to the Xunlai storage (while in towns), without having to switch characters.
Anet could cynically restrict this storage upgrade to the next GW expansion, till there is a massive outcry
