After they add DD Sports HD, they should add DD National HD so that we can daily 1 PM and weekend 1 PM and 8 PM movies in HD and after adding it they should add DD India HD so that we can watch world news in HD........ On a serious note buddy be it Airtel Digital TV or any other operator they should first add only those popular HD channels which have such content wherein watching in HD Resolution would truly enhance the overall viewing experience, only if the have lot of spare bandwidth capacity (like Tata Play has post leasing transponders on GSat 24 ) then other remaining HD channels like DD National HD, DD Sports HD, DD India HD, Sun Neo HD, ETV Bal Bharat HD, Travel XP HD etc can be added on the platform as i think one can enjoy watching shows on SD feed of these channels without feeling much need to see the sams in HD