Well, an engine needs an aircraft.
If they run with the Kaveri indeed, which aircraft are they going to put it on? I thought all the LCA Mark1 deal has been done with GE 404 engines.
In that case, if Kaveri were indeed going to be put into mass production, it has to be for LCA mark 2. But LCA Mark 2 uses GE414 engine.
Yes, Kaveri will be an unproven engine. Why? Because testing an engine is one thing, mass producing them, long term reliability, putting into operational use etc are harder.
If India is collaborating with a country, then rest assured, no Indian engine will be there even by 2030. Ideally, Kaveri should be put into mass production even with flaws and the new problems associated with Mass production must be tackled. That's what any country does. Ultimately, it's a question of courage and confidence