"We know he supports Roe v. Wade as precedent and "settled law"."
No we don't. We know he said something along those lines as part of the tapdance that all Supreme Court nominees must engage in to lessen the probability of a nuclear battle.
"We know he did pro bono work for the gay lobby."
We know very little factually on this issue, and even if he did, it doesn't necessarily mean anything.
"We know he's "open-minded"."
Wow. That's pretty damning. What's the context of that "quote?"
With all due respect, I don't think that's a bad thing.
By all accounts, Roberts respects the Constitution. I believe I've read that he's a member of the Federalist society and that his wife belongs to a pro-life group. I think these things are a better indication of how he will vote in the future than who happened to pay his law firm for assistance in a particular case.