IMO rank 10-11 + sometimes visits to Mythic is a sweet spot for shiny Aggro War. Quick daily 10 games and the profit is very similar to OP meta decks that are much much slower and less affordable. $ per hour ratio is just epic here, if you enjoy playing that's even better! IMO Playing war (or every other deck)
require some mindset: you just accept that you cannot just win vs some decks...