Great data, but some commentary based on my history with things

1 - agreed, I've seen several 2020+ around 64kWh usable

2 - you can't do calculations like that. The raw value isn't linear and is falsely extrapolated at the high end and broken below 5%. It's pretty much useless for capacity calculations. Note that the rated capacity of the battery is only 64kWh - but we should be able to get 66 with normal usage. This is, however, not what we've seen. It's typically around 64 usable.

3 - this is well known. If you want, plot the two. There's a non-linear relationship between them. One curves around the other. It's very messed up.

4 - that's because SoC DIC is 8-bit so has 100/255 or about 0.4% increments. I've looked hard, there's no displayed capacity that is higher resolution than that.

5 - that's too high to do real calculations. You really need to be below 10%, and even there it's going to be off by a bit. The bottom 10% is slightly not linear, and the bottom few percent is definitely not linear.

6 - thermal conditioning while unplugged is only at extreme temperatures. We think it's about below -20F or above 120F.

7 - correct, but .. eh ... I've done it several times. There's little harm in doing that. Maybe worth 10 cycles on the battery overall.