I agree about the anchor seating change... Lisa never developed a reporte with Lobel, and their exchanges at the beginning and end of sports were always awkward... sometimes even painful to watch. Jack and Lobel obviously go way back, and Jack will have a much easier time "handling" Lobel's sometimes unusual behavior. Having Jack there may also keep Lobel in line a little bit more. The station is probably also hoping that Lisa and Ken Barlow develop a flirty, or at least dynamic relationship. I think this seat change is for the best; it should make things a little more smooth.
I take issue with your description of Lisa as "vanilla", however. She may be no Natalie Jacobson, but she is a damn good anchor - very smooth delivery, personable demeanor, and she works well with just about any male coanchor that the station throws at her. She may be a little "too cute" from time to time, but I would take her anyday over ice queens Natalie Jacobson and Cat Bandini.