I can't speak for anyone else, but I can speak for myself. I am (will be) happy with any block I receive, because with each block comes a new quilting friendship and isn't that what this site is about. I too am using this swap as a way to try new blocks and as cindalu stated they may not be the best, but I will have given my best and I think that is all anyone can ask for.
So try to remember that this swap is about having fun, learning new things, and most importantly sharing something that we all love!