I do appreciate all the input from everyone. After I got home from work today I did a little excavation on the surface and snapped a few pics. It is pretty hard to see in the photos with the lack of contrast. Maybe next time i’ll paint some water on the roots to help them pop a little. Not terrible, but a little one sided. It was also hard for me to get a decent shot with the sacrifices getting in the way and being nailed to the raised bed, so bare with me.
I think the firsst pic (featuring my thumb) would be my favorite nebari, not really knowing what the tree looks like from that angle. There is a thicker, higher/crossing root around the top left of the last pic that I would think could be removed to restore a little balance.
I am thinking I could put off major root work, and sacrifice removal, for a few years as everyone seems to suggest, but might it increase vigor down the road to repot into the same flat but with a much coarser mix? Then I could make sure there weren't any big downward pointing roots while I was at it?
Thanks for adding the pictures it gives a clearer picture.
Based on your picture i would repot using the 1/2 HBR method on the side that has the fewest larger nebari. See if you can reposition some larger roots out instead of down and regenerate that side, leaving the better side for a later date. This gives you the opportunity to improve the roots on one side, determine if further action is needed down the road. Ie: root grafting. And do so without interrupting the overal vigour and growth by too much. Do not remove sacrifice branches or any extra foliage at the same time as the 1/2 HBR unless necessary to prevent long term damage to design. At the same time if you find an area that is bare of roots, you can drill a small hole, stuff it with sphagnum soaked in rooting hormone and cover with soil. Sometimes this promotes roots at that location. I use a 1/8 inch drill bit on slow speed. Approx 1/4 to 3/8 inch deep just where the roots may be desired. It also helps to use sphagnum to cover this section of soil to keep it from drying out.
When doing the 1/2 HBR use a chopstick gently and comb roots out toward the edge from the trunk. Keep as many small roots as possible and any larger ones that can be straightened out or moved into vacant areas. Seal the ends of larger ones you cut and use wire staples or raffia to hold the roots in the the position you prefer. Raffia is better because it rots away and you do not have to remember to remove it.
Hope my ramblings make sense. 1/2 HBR is doing one half of the root ball at a time and bare rooting. Chopsticks are better than root hooks, use them gently and slowly work your way through. I often rinse gently away then use the chopstick, repeat, repeat, repeat.
Then the chopstick carefully to assist with adding the soil back between the roots once positioned. Ensure no air spaces and water thoroughly until the water runs clear, wait ten minutes and water thoroughly again. This washs away the fine dust and debris and ensures that the whole root ball is properly watered.
The advantage will be that in two years you can repeat on the opposite side and the tree will not have to suffer a major setback with a full repotting because it was left too long.