Main issue is loss of aircraft because this is what rank 7 air tree would look like without Swiss and East German aircraft

Who said anything about removing Swiss?
Even with the Swiss aircraft the rank would be halved in size
Over exaggerating if you actually look at the tree. It’s better to have a few unique aircraft than a bunch of copied options. Personally I am not interested at all in most of the middle option migs & SUs because it’s just USSR copy paste. I don’t think I’ve even seen many people who are excited about getting the german migs, nor speeding to research them. All they want is the eurofighter. That lack of enthusiasm for these research filler aircraft should tell you everything you need to know.
Forgive the crude markup but you lose 5 aircraft in rank 7 leaving 2 West German and 2 Swiss

And I can agree until there’s a lack of options, even if we separate East Germany, where would it’s unique ground and naval vehicles it can have go? East Germany can’t be a standalone tree and would be heavily copy paste. Imo, East Germany should have more of its unique vehicles and only use the copy paste to plug br gaps