Although they do need some work on those as well, especially if they will go up-scaling.
They haven't explored the whole 48th line of PF/MF either. There are other variations /Indian for example - PFL, Bison/ that they never released. I guess India is a small market for scale modeling.
I am happy with their new releases, but I will never go for 48th Mustang as long as I can get 32nd and Tamiya too.
As for their releases it really beats me how they are choosing their subjects.
Czechoslovakia - former of course - is famous throughout the Warsaw pact countries mostly with their license built MiG-21F-13, /also MiG-17 but that's another story/ and Eduard never released neither Soviet nor licensed F-13. Why on Earth...?
Second very famous Czechoslovakian subject - again Warsaw pact countries - is their Su-7 service history. No Su-7, which by the way is almost perfect size-wise for 48th scale.
I know they know about it, but probably numbers dictate other choices. That is my only answer.
Even license build Me-262 will be better than those subjects mentioned. Or L-39.
At least in my opinion.