Kevin is correct, the reason we didn't enable the set level command is that we don't want everyone jumping to high levels, the lower levels stuff needs to be tested out too! This is why we increased the XP rate, because we want everyone to go through the full process of training their account, just must faster then they would when the game was released so you don't feel it is that much of a waste of time.
If you want, we could increase the XP rate further for testing.