Well unlike being a politician a judge should have at least a couple of years on the federal bench you can go over. Lagoa hasn’t even made it a year yet. She maybe Rehnquist reborn but her federal jurisprudence is too small to make heads or tails out of it.
Souter was also an enigma as an obscure judge in NH, with no record of decisions on major issues of concern to us.
GHWB's chief of staff John Sununu picked him solely due to one decision that Souter made while Sununu was NH Gov. The State Govt was being sued by someone, and Souter ruled in favor of the Govt.
Once he had lifetime tenure on SCOTUS, we soon found out what his political leanings were.
That's what also scares me about Lagoa. She could be another Souter-In-Waiting, and we have no way of knowing, short of giving her lifetime tenure on SCOTUS and then sitting back to see what happens.
But Comey definitely DOES have a track record.
Past rulings are a very poor indication of what they will do once they have reached the pinnacle and can’t ever be fired. This has been proven many times. Most recently with Roberts. kavanaugh and Gorsich have also shown to be not as conservative as we thought.