I believe socio-economic parameter should be the one & only criteria for quota system. unfortunately we are just go on adding castes & castes every time to political reasons and nothing else. every one has right to live in a dignified way in a society. we should look into that and bring the under previleged society into main stream by providing, socio-economic facilities & opportunities. To have the united india, i believe better just to remove the tag of 'caste' every where.