I got the main idea of your previous post, but I have to say that you are too early trying to say good bye to me
As I said before, keep your UDK community link with yourself for now. And yes, there is no one that forces me to use GS and no one forces me to stay at this community. The only thing is, few unfinished projects. As soon as I'll finish them, engine will be changed.
And believe me, that will be one of my best decisions I've ever made in my life. The only thing I'll miss is few friend from this community.