Beleive everything happened is for a good reason. Now we will be getting F4 version ( i remember
@Picdelamirand-oil once said all F4 now manufacturing are wired to be upgraded to F5 verdion). So we want we can manufacture F4 version with that mind, don't know goi will do it due to cost implications or not. If we had signed the deal in 2016, the aircraft we manufacturing will be F3 verson with growth potential only up to F4 version.
Now if wants, can manufacture F5 compatible F4 version, and direct F5 version in later stage. Based on the r&d path of Rafale, i am expecting the F5 verson also will be designed/wired in such a way that it can be upgraded to F6 verson.
So if GOI is smart, we will be manufacurring 90 potential F5 version &24 potential F6 version.
Yeas i do agree that 36 initial number is so small, we would have gone for follow on 36 numbers.