I’m a germany player with a bit of obsessive-compulsive disorder, I feel so damn uncomfortable with current TechTree arrangement.
There are so many appropriate placements.
First we have the techtree of Fw190s:

We can see the BR is from 4.0->5.0->4.3->4.3, with 4.3 and 5.0 grouped together.



All in ciaos. And my advise is to at least group them with close BRs, similar models would be even better.
I will propose a feasible reposition here:
Tier III:
Fw190 A4 (BR:4.0)
|
Fw190 A5 group:(Fw190 A-5/U2(BR:4.0) → Fw190 A-5(BR:4.3) → Fw190 A-5/U12(BR:4.3))
|
Tier IV:
Fw190 A-8(BR:5.0)
|
Fw190 D group:(Fw190 D-9(BR:5.0) → Fw190 D-12( BR:5.0))
That’s all for Fw190s.
Then, let’s see what is happening in the bomber line:
We have 2.7->5.0->4.3->4.7->5.3, interesting right? I am still not knowing why this 5.0 bomber appears here.
Obviously, we can simply move the me264 between Do217 and Ju188.
Finally, the main thing is the swiss tech tree beneath bomber line:
Bombers suddenly change into fighters, that really makes sense.
What we can do is moving the whole swiss line under G91, meanwhile, alphajet and tornados move under F84F, the Mig23 and Su22s take the original place of swiss tree after il28.
The changes will appear like this finally:


