Vitya, if you know chess then you should understand that the Amazon is less wild in a cramped board situation. On a big board, however, it would have enormous scope. Gustav III's chessboard might be just the right environment for the Amazon. This could be a good variant and should not be rejected off-hand. I think it's wrong that the tournament activity on the Chess Variants pages misses the opportunity to test variants, but instead includes already played variants.
/Mats