The transcripts are well worth reading. I read most of them this weekend. They are also over at the Post.
Not quite sure what to make of Roberts. I need to look up a few things. It seems he has traced out a path for overturning Rowe v. Wade or Casey, but I'm not sure he'd do it. In any case I think he is a good choice and may calm down some of the politicization of the court (which Scalia would not do). His focus on the rule of law I like. The only concern I have is that he is too much the lawyer's lawyer.
Your last point is a real worry.
You can also watch all the hearings at Cspan.org.
I have the full expectation that he won't please the conservative side with policy making. But, I am also 100% confident that he won't do the same on the liberal side.
For a SCOTUS justice, that is all I ask.