BarfBag: While the R&D guys are pretty confident, the Air Force is not. and to no fault of theirs since they are pissed off at the repeated delays. Mebbe this was why the indegenous AJT project was put on hold and the IJT was launched as "practice". In any case the IJT that has come out, HJT-36, is quite a decent "growth replacement" for the large fleet of Kiran basic trainers.
To answer a specific quetion that was raised b4: I remember seeing a static model of the indegenous HJT-36 at an airshow, and the one of the people standing around explained that it could go supersonic upto 1.2M in a shallow dive. This could be useful for basic training in supersonics.
I agree with you completely BarfBag!
I think the solution here is to do what Former "Missile Man" and now our President Abdul Kalam had done when he led India's missile programme: Involve the Users, that is the armed forces right from the very beginning and from then on keep them in the loop throughout the development phase right upto implementation. This application driven approach keepign the end users in the loop throughtout could be one of the reasons why India's missile and space programmes have been relatively successful, while our aviation programmes are languishing at various stages.