Ellen is about the only talk show that I enjoy, but rarely watch that since it is on while I am at work, her show is usually uplifting which is nice.
I think that a talk show with these two would be nothing but a gimmick and I would bet that it would fail in a short amount of time.
I think that maybe Paula could carry a show on her own, but the mix of Kate and Paula would be weird. I think that many have Kate burnout at this point. I do give Kate credit though, she seems to be growing as a person, and I find her much less repulsive lately