I like the rates. x4 exp is very nice and with additional cash-shop-items you can level very quick. It should be a challenge to reach level 93. When everybody reach level 93 very fast (for e.g. after one week) that would be very boring.
@Balkana: I don't like the appearance of the pets, because the pets are too small to my mind and they remember me to tamagotschis (which I hate), because they must be feeded every time. Futhermore I don't like the pet-skill "guardian angel", because it's a little bit unfair in pvp. But o.k this would be a perfect shop-item.