CGI faces; I expected this and after a little while I didn't take any notice.
The German plane later on, which was mostly based on a Heinkel He111
did kinda disturb me a bit

Tail is completely and obviously wrong, not even the Spanish versions had tails like that afaik.
Indiana films have had made up stuff before, most memorable for me was the "flying wing" in Raiders. I think it's referred to as a type of Blohm and Voss, but afaik that manufacturer didn't make anything like that. Horten did though (and the Americans took at least one Ho 229 proto at the end of the war).
Think I enjoyed this more than the last film. Going back to the old Nazi formula is cool