The only possible negatives I can see at first blush are that it's a longer walk down to these boxes and a front pin becomes potentially less attractive with the longer approach generally required.
It's a significantly longer green-to-tee walk to the back box benched into the woods, only marginally so to the other gold/blue boxes, about the same to the white box, and then again significantly longer to the forward box as it requires crossing the fourth fairway. But when cruising around in a cart as you did all weekend, it's still the same few lumbering steps irrespective of which box one plays
I also disagree that the front pin becomes less attractive with the longer approach from the left side, which is where most tee shots will now end up. If anything, it's a more interesting shot when trying to bounce a mid to long iron over the hill and onto the front, or carom it off one of the kick-boards and back to a front pin, as compared to flying a wedge to short iron at the pin.
For me, a bigger quibble would be that the angle and added length effectively remove the bowl on the right side of the fairway as a viable option for moderate-length hitters. This is unfortunate, as I prefer the approach from that side, even with the blindness, to some pins. If the new boxes were the only boxes available, the hole in my view would become too one-dimensional off the tee and with the approach compared to what it has been.