Kamon, if you don't mind me saying so, (and I hope you don't) I don't think you should be leaving for a matter over rank. Maybe you have other reasons, but to me this seems to be the main issue? Ranks are not everything. You have made history here with your character and it would be a shame to see it thrown away. (for this board.)
It's been a very long while since you and I have roleplayed with one another, and I'd be interested in roleplaying with you here. I know the things you're capable of, I trained your character long ago. You were a good student then, and I am open minded in believing that you have continued to improve.
If you are unwilling to participate with certain people, I can understand that. It shouldn't require you to leave, however.
While I don't particularly agree with some of the things you've said in this thread, I still don't wish to see you go. I won't beg you to stay, but I really don't think leaving is going to change anything. As I said, I'd like to roleplay with you, and I see no reason why I cannot roleplay with you here.