Chabahar was only meant to have indian access to Afghanistan.But as Dr Ashraf Ghani made it to President in Afghanistan.The significance is reduced as RAW won't be allowed to work as much as they had done in the past in afghanistan.
*Indian trade with central asia combined(all countries) is less than 400Million dollars
*Iran is only connected with turkmenistan in central asia
*Turkeministan further has border tension with Uzbekistan
*Kazakhstan has alternative route for trade
*tajikistan has already signed trade agreement with pakistan recently,has invested in karakoram highway and is all set to import oil from kuwait through pakistan.
*Afghanistan under Ghani(atleast until 2019) is a pro Pakistan state,and i remember once watching in a program,when a expert said that if Pakistan offer Pakistan a exclusive Afghanistan port in Oramara,it will promote pakistan relation with afghanistan to a new level,with the relation expanding,i think it is very much possible
*Last year India has requested Pakistan to give them land access to Afghanistan and so does karzai last year.
I don't get it,India pulled out from the IPI just because of it being through Pakistan but is happy with TAPI,which again will pass through Pakistan.
anyway good luck with the under sea pipeline,but make sure that it won't pass through Pakistan territorial water