Chabahar will be a deep sea port in 18 months.
I still don't think you have understood the scale of Chabahar. It is replacing the Suez Canal for India, as it will for the rest of East Asia. It is literally replacing the Suez Canal. It is literally cutting down travel time by 26 days. The entire trip from Mumbai to Russia is 40 days. That will become 14 days once the entire project is completed.
We are not talking about just India-Iran-Aghanistan. We are talking about Europe, Central Asia, Africa and East Asia. We are talking about 3 continents. If it was only India, Iran and Afghanistan, then CCP wouldn't be making such a fuss. There have been two articles in a span of just two days.
The Japanese and Koreans are already investing in Chabahar. Power plants, steel mills.
http://en.mehrnews.com/news/109947/Iran-S-Korea-to-build-power-plant-in-Chabahar
http://www.koreatimes.co.kr/www/news/biz/2016/02/123_199286.html
These are not decisions "made in mind", these decisions are happening on the ground.
India is also planning $2B worth of rail and road links and of course the gas pipeline that will go into billions more. All of these are happening and they are not long term goals.