I will requalify as as Black Signature today, and will probably end the year with 10,000 km and U$S 1,500 to spare (would be happy to be able to move them to 2018...). Only Economy flights, not a single paid Premium fare. I did fly a lot, though, and with above average fares in general.
I do get the logic behind different conditions for living e.g. Ecuador, Uruguay or other places where Latam does not have an important hub. But I really do not get it for Brazil, which is arguably the most serviced hub for Latam. It does not make any sense.