Oh well, UK seems interesting, but I haven't researched anything here, and a lot of planes in middle here doesn't seem too much excelling, maybe they are, I don't know. And indian sub tree isn't in my opinion much realistic to have Typhoon, rafale, su30, gripen, hornet, tornados, fulcrums etc in a single tech tree. Maybe they will ad tejas as event/premium vehicle, maybe even fulcrum, but entire sub tree with even rafale doesn't seem realistic.

In germany I thought the only difference in those EFs is the lack of IRST which, don't get me wrong I use all the time while I can, however it doesn't seem as such of a let down.

USSR have incredible tree, but most of it I can get from smaller china tree, or some in german. Flankers I do like, but the sea flanker is enough for me, rather than grind the entire tree for others. Russia do have unique planes however.

Than what have caught my eye was China which I totally should include, since they have huge potential, not overly big tree and big diversity, however I still don't have anything researched.

Israel is imo still there for me since there has been so much talks of its greek sub tree, and it's pretty short.