We took into account a lot of factors before making this decision. Yes, Guild Wars was a success for us, but that doesn't mean that we don't want to make it better and improve our game as much as we can. We are committed to always improving the gameplay experience for our players, and as we are a small team, taking it down will give us the opportunity to review and tune this feature more efficiently.
I am aware that this is a controversial decision and we did not make it lightly. For those that wanted a break, enjoy your time off! For those that love Guild Wars, it will be back better than ever!