What @mr_boo already said. They are very time consuming to make.
When I made my first techtree illustrations, I was still in highschool and I had loads of free time. Now that is no longer the case so I had to make the progress of making the techtrees easier for myself.
I definetly see the benefit of adding Indonesia. Mainly in the jet-bomber area it would really help the tree. But the political ranting this would start is just not worth it to me.
Adding the Belgian Kongo would start an even bigger fire
Yeah those are 29 unique aircraft. I didn’t include licence produced stuff, only unique Fokker, Koolhoven, Renard, LACAB and Stampe & Vertongen aircraft.
I recommend actually looking at the tree in detail before jumping to conclusions that the lower ranks are all copy paste.