Whew, right there with you on that one! Also, didn't help that the writing for these iterations of the character was just dreadful but I agree that the casting was wrong.
Something I appreciated, when the writing was actually good, was that characters could seemingly be bitter rivals, sniping at each other one moment and demonstrating empathy and understanding in a different moment. Lisa and Lucinda did it when Lisa vowed to go after Lucinda with the Martin Guest mystery yet, didn't use it to hurt Lily, even when it would clearly be to Lisa's advantage to do so. This happened with Barbara and Margo a few times also.