No they didn't. They produced a proposal, which is not the same as a design. A proposal which included outline capabilities and restrictions which made it clear that it was pointless to continue with a design process, because - for the reasons I've already outlined - the aircraft would be deeply flawed. An actual design would have been allocated some initial funding by the government, and produced by BAE following this initial investment. Designing aircraft costs millions and you don't do it without some idea of funding or another commitment And on the MiG-29K (an aircraft over 30 years old by this point) the Indians chose it over the Eurofighter for the same reasons - it was clear from the initial proposal that the whole idea of conversion was flawed.