I hope it is ok.. I created a couple of virts.. Just some food for thought if you decide to refine this tree.
The first one is basically just reducing the silhouette of the tree and adding some jin and shari. The second one entails removing the top and right side of the tree. Then adding jin and shari. Both designs pull the branches and foliage back into proportion with the trunk.
Although both designs require quite a bit of foliage and branch removal. When the tree is healthy enough and if it is done at the proper time, I believe it could be possible. However, I do remember that this tree lost a lot of foliage in the interior. Might be best to get it very healthy and see if you can get some strong back budding first.
Rob