Finally made the trip back.
STATS: 2300km, 5-10*C dry & light rain, 2 days, ~200kg vehicle load, 455kWh, 197Wh/km (316Wh/mi), 5 SC charges per day, 140.50 EUR spent, 30.9cent/kWh, 6.1cent/km
GOOD:
drivetrain error never came back; confidence restored
handling feel more stable - no getting...