Definitely, matching the opposition is sometimes key and I think we will see some more rotation in midfield now Kayal is out.I think Chris also takes into account the opposition's midfield players.
Possibly a fair point regarding Sidwell, but are we just writing him off because of his age? I felt he got stronger the more he played last season. Anyhow, I'd certainly start Sidwell and Norwood against Preston, we know Grayson's team will be physical and I just don't trust Stephens' to not snap at the ref and get booked or even sent off again. One thing I'm comfortable with is that Hughton is 99.9% likely to make to the correct decision.
Perhaps I am, it's just my inclination that Sidwell might have to be rested sometimes. I completely agree with your post though, I think Sidwell is wiser than Stephens and against more physical sides/in tough away games he could have a big role to play. As you say though, Hughton nearly always makes the right decisions long term, so we'll leave it to the expert!