I don't expect to see very many defections. This is what the voters asked for. I don't see the voters changing their minds.
Nor do I see any of them developing a conscience. If they do, there is a very good chance that they will lose a primary challenge.
The legislature may change hands just because it's closely balanced and things do tend to swing a bit. It's not so much about voters switching, as about small amounts of turnout making a big difference.
So as far as I can tell, expect to see more of exactly what we were told was going to happen.