I am so tired of dragging one item at the time into the transfer window.
So im suggesting here to either have some kind of button that you can hold in and then click the items you wish to transfer so they will be highlighted.
Kinda like this:

Or that you can drag so there will be a window like when you are in windows and dragging a window over a couple of icons u wanna mark and move instead of moving one by one.
Kinda like this:
Q: What if the users vault is full?A: If the person only have like 4 slots left and you are going to transfer 10 items.
Then the first 4 Highlighted items you selected will be transferred and the other 6 will stay on your char.Biggest reason I want this to be implemented is I dont have a char that can do wells so each climb I grab 100-150 whites that I send to guildies that help me do the wells.
So if this would be implemented it would save much time and the transfer will also go much smoother.
But its not only good for sending over lots of whites to each other in the guild. If this would be implemented sending equipment to each other will also be smoother.
f.e someone want to lend your full dagger set. You highlight your 1-55 set and just send. Instead of sending one by one.
This would also be able to use when you transfer items from your own characters of course and not only between each other in guild through vault.
Regards
Robin