Where are the MBA admissions heading in India ?

The path to admission to a good management institute in India is often filled with hurdles like GD & PI. Both these rounds test the candidates' communication skills, presentation, and a host of other qualities. In fact, it is expected from the candidate to possess all these qualities. To top it all, a candidate who is called to the GD/PI sessions has already demonstrated his analytical prowess.
Aren't learning these qualities a part of the MBA course?
I personally feel that besides the core subjects of management,a high calibre vocab espoused with presentation should be a part of MBA. However the candidates should be able to express themselves in clear diction. Hence a PI round should be the only round after the rigorous written tests.