I got the impression from your posts that you were serious enough about tango enough to visit BsAs some day. The city is beautiful, but the air quality isn't because there is no unleaded gas.
Of the many things that I've read about how BA tango is changing, It seems as if it is for the worse to suit the tastes of the younger crowd. You've mentioned how the milongueros y milongueras don't go to the milongas anymore and that perhaps one day, if it gets so bad, you might not want to go, either? I don't want to go to BA just for the dancing if the quality of the dance is like here in the states.