Yeah, the trickier pattern games are on the comeback, it seems. Definitely worth taking a look at the harder and irregular games in the 70s. Though as soon as we make predictions about the LSAC's machinations, they change it up, so who knows.
I’m not sure, but I doubt it. The LSAT grading scale is designed to account for those discrepancies so that the scores will be universal for people applying with scores from different tests.