A few years ago, B-52H fuselage was hauled from the boneyard to Oklahoma City where Boeing is in the process of taking it apart piece by piece while 3d scanning everything so they can build a CAD model and do FEA for future upgrades. First on the list is engines from this century. Unfortunately, Boeing is the prime contractor so they'll probably fuck it up irreversibly.
I remember that in Armored Champion, Zaloga argues that the E-Series was mostly a "we must design something or will be sent to the East Front" instead of a thing the Germans were actually planning to mass produce.
That was the primary motivator for the team in this timeline; but in an alternative universe where they actually won, it would be the most rational direction to take as it would effectively be a complete revamp of what they actually had in WW2 which was an incredibly wide variety of vehicles and equipment forcibly pressed into service from other nations.
It would also depend on how and when they won as well though. Chaos was the procurement strategy for the Reich's entire armed forces and I doubt that would go away if the system was shown to work with a sweeping early victory, the status of the UK, US, and USSR are also all very important in this scenario.
