Hmm...I know that mailing items to your other characters works but I think it would be easier if we had a Legacy Vault...say...Legacy level 3-5 and you get a new special tab for your cargo hold access.

For the Stock Market...I think that each guilds could start corporations which adds an entry to the stock market. The shares would increase and decrease in value RANDOMLY every day, but the more shares that people buy in it, the more credits could be made. Of course, there would need to be severe balancing and such...BUT THERE NEEDS TO BE A LOT MORE EXPEN$IVE items in the game!