A mail system, yes i know you can just map travel. BUT what if a person you are giving an item to is offline? Like for the online auction. A seller could mail the item to the buyer and the buyer would have to pay a set price to obtain it. The seller would set that price when he sends it, If its not what he said on the auction, he would get a bad review. Simple as that. And just today, i was gonna sell a pet to a guildie but i was busy. And now he wont ever be on when i am. I could just mail it to him! Server techs, limit it to 5 items per 'account'.(or put an actual file size limit, like on real email. Enough to allow for the item post and a short message.) People shouldn't need more than that. Anet increased the storage size..i think they could do that....And have it on a different NPC too. And clear 2 week old mail entries. oOOo just thought of this....I bet spammers would send you crap, well...hmm. Check your mail often i guess

And, an international clock, All the same on all servers. Military time.
Please, if you have any disagreements with this, post.