Interesting to see how many of us have an IT/app.dev background … Not at all sure whether that helps or hinders, tho ! 
Yep, me too … Simple and obvious, from my personal perspective.
I’m fine with there being a History feature, because there were regular requests for DxO to provide one (esp. from users coming from other tools), so it was an appropriate marketing response, if nothing else. However, I reckon there are a lot more deserving features on which the DxO team would be better be expending time and resources.
John M