I accept your point about taxation (it's just my free market/anti- government personality coming out again
We do need to be somewhat careful with implementing taxation but the government will inevitably waste this opportunity after all they are politicians (people who failed grave robbing academy and went into politics - okay just a joke).
Tax is merely a single tool and in order to achieve an integrated and effective game-plan we need to invoke awareness, willingness and education within the public so that can actaully 'see' what their environmental cost and/or expenditure really is.
However returning to the initial argument of aviation focused tax well that's difficult because as an industry aviation is too big a target that isn't as nimble or flexible as some others. Therefore as a consequence politicians can 'beat up' the industry more than is required simply on the basis of a whipping boy.
But I agree even though I love avaition, free markets and the environment we need to scratch heads and start moving ahead.