While exploring the same concept (see Very Heavy Chess), apart from the difference Queen vs Amazon, I have been testing the relative position of BKN and RKN with Zillions. My first idea was also to have BKN on the 2nd row, like in your variant, but then I had the feeling that it is very difficult to develop the RKN. Then, I changed and put the RKN on the 2nd row and the BKN on back row.
Maybe it is because in VH Chess, RKN and BKN are set at the extreme wings, a/l, and not in a more centred position d/i like here.
While exploring the same concept (see Very Heavy Chess), apart from the difference Queen vs Amazon, I have been testing the relative position of BKN and RKN with Zillions. My first idea was also to have BKN on the 2nd row, like in your variant, but then I had the feeling that it is very difficult to develop the RKN. Then, I changed and put the RKN on the 2nd row and the BKN on back row.
Maybe it is because in VH Chess, RKN and BKN are set at the extreme wings, a/l, and not in a more centred position d/i like here.