Hm. I feel like you took the single most predictable route for your test (I figured out where it was heading as soon as I read 'Germany'). There's far too much 'What if Nazis' in spec fiction for such a direct bland approach to work here. At the moment, I'm not sensing any story behind the anomaly, and it seems like a thinly-veiled excuse to trot out a trope that has been worked to death, resurrected, and killed again.
I could see potential in this if you were to expand the test log to show a variety of changes and outcomes.