I agree with loving to steal legacies from other chapters! At my school we had a fair amount of legacies, but definitely not a lot of them. One girl in my chapter was a triple legacy to another house and she pledged Chi-O...we loved her anyway, but it was awesome and an extra enjoyment to steal a triple-leg!
To address the other issue in this thread, I think it depends on the campus as to whether you would get cut for being a legacy to another house. At my school we looked at it as a positive attribute because the girl was familiar with greek life and would likely make a strong active member. However, if a girl had ever told me to "not bother rushing her" because she was a leg to another house I would have just probably stopped the conversation. And I'm not at all surprised that that biatch didn't receive a bid to her legacy house...she was probably thinking she had an automatic bid and was a biatch there too.