I respect your love for Mohammad P.B.U.H , but all I can say is you are talking to sheeps having everyone their own version of Islam not Islams version of islam :D ..
Tough I am not supporting this guy Mumtaz Qadri because I don't know truth, But I also don't believe media's version of truth :D
And also brother I found some reference from life of Prophet Mohammad P.B.U.H which shows no killing on such act, If you have any good reference I'd like to have it ,When I say reference means from life of Prophet and who gave fatwa then , when this became legitimate ?..
About this current system you are 100% right but again you are seeking attention of sheeps :d