That is indeed a damned shame! You did an excellent job, as far as I know from the forums. I am probably coming back in Legion, so I do sure hope to see you in-game when it comes!
For anyone else actually interested in being the GM, I hope you do take care of it, and show the guild the proper love it deserves, which I believe you will do, because I created a guild with awesome and capable people! (Thus I believe people coming after my leave are awezome and capable as well!)