How do you know you're going to like the new class? You might end up disliking it just as much as the one you're currently playing. It's foolish to bank on the fact that you're going to love a particular class simply based on how it looks or sounds. I normally main the Archer-type class in MMOS; I tried Lancer here and ended up falling in love with it.

Play the game for the game as a whole, not because you think you MIGHT love this future thing that you haven't even tried.