Germany should have blasting Gelatin, else how would they be able to have smokeless gun powder. They should also have the Field Telephone set , or loose the techs: army telephone system, signal security, basic fire control systems, General Staff, etc..
Since Motor Transportation requires Germany to have Gas Massproduction tech in the industy field. They should either have the latter tech, or lose the former. Or we could have an intermediate tech, like small refineries that satisfy the early motor transportation, and then is a pre-requisite for gas massproduction (which could be moved down in the tech tree by one gold level).
They should also have bakelite (industry) to make it feasible for them to have the telephone tech, basic ground/naval wireless(electronics) [naval wireless also requires Dynamo, which Germany does not have.].
Germany should have steel alloy (industry), before they can have Krupp naval armor.
How can they have Naval Harvey Steel (naval) without having the Stainless steel tech (industry)?
Should they have the Superdreadnaught tech without having the naval gun 14" tech also?
Germany has the 200mm+ siege artillery, but that requires the 200m+ howitzer. I would like to see this first siege artillery have a different requirement, perhaps the 70mm+ field artillery. Then have the next siege artillery (250m+) require the 200m+ siege artillery, and the 200m+ howitzer.
Should Germany have Defense in Depth (Ground Doctines) if they don't have the Corps telephone system?