There are several other old limitations that looks
rather ridiculous now.
As example, from help files: "iddle"
"This 30 minute limit exists for a reason. We want to give other
people a chance to play this fine game, too. Using a client to
circumvent the limit is considered abuse of the resources of
the game."
This was a problem 10 years ago, with 100+ players online, crappy
(compared to present days) server and laggy conections. However
today it seems just a anachronism.
Perhaps someone could review those old limits (including mailbox
size) and update to modern standards.

Just a thoughts,
Valdar