BCCI has consistently opposed DRS, or UDRS as it was originally known, since India under Anil Kumble’s captaincy lost a Test series in Sri Lanka. The decisions went against India. Other countries agreed on DRS. It was part of World Cup 2011.
Some decisions based on Hot Spot during India’s series in England in 2011 raised questions. India lost the Test series 0-4, five match ODI series 0-3 one match being a tie and another abandoned and the one T20 match. After that India did not have DRS in India and Australia.
BCCI has said it is not against use of technology but is not sure of ball-tracking technology and Hot Spot. It is likely that more Cricket Boards will oppose DRS when their cricket teams lose. In case of England the change was dramatic, from 4-0 victory and No. 1 Test ranking to 0-3 loss and No. 1 Test ranking under threat.
Ball-tracking has to be automatic and not someone’s imagination against field umpire’s imagination. It is said when there is DRS field umpires give more LBW decisions and many of the decisions are upheld. Batsmen do not get the benefit of doubt.
There will be winners and losers due to DRS. When winners turn losers they will complain about DRS. DRS to be acceptable to all should not have any room for error or manipulation.