A lot of players have 'mule' alts, used to carry all the stuff that they cannot/don't want to carry. Instead of creating a charcter used for Just carrying stuff, i would suggest a storage house.
Here's my idea:
A guild house, open to the public, much like the Octarchal place near the tavern. This guild house would have (Chests, crates, etc) assorted in the house. These (Chests, creates, etc.) would lock with a key.
How could you aquire one of these said keys? You would have to buy them from a GM, much like you do when you buy a guildhouse.
Benifits:
-Something useful to spend tria on.
-Some people just need the extra space
-No more having to create another character just to carry stuff.