Matsusaka was a good trial run, got a feeling for the low speed behavior, brakes that didn't want to stop the car (or, alternatively, I'd flatspot tires), and trying to find the sweet spot for downshifting since I don't heel & toe. Ah, what's that I hear? A note of turbo in there!
On to '75 Silverstone and the car came alive for me. No longer awkward, it just sings on this circuit where you can feel the downforce working and find the limit of the tires with minimal flatspots. Yup, a wide open track is where this car shines! I only stopped turning laps when I finally messed up downshifting for the chicane and thought I ought to go try Monte Carlo '66. Okay, now the car is totally out of its element here with the default setup. Definitely don't want to run the default there.
I haven't looked closely at the replays, but tires in this period showed spectacular sidewall flex. I sure hope the final product includes that.
This car could single-handedly make me interested in '70s F1 because I'm starting to meld with it.