I agree with sewbizgirl. Keeping track of what individuals want would be impossible and I'm glad that Sandra and Charlotte arean't pressuring themselves to do so. You take your chances with a swap, but that's part of the fun. There are lots of ways to use or pass on unwanted squares, and with the number of charms involved in swaps like this, you are bound to receive many that you haven't seen before and are pleasing to you.
Yonnika, I would be thrilled with Halloween prints and hope you reconsider.