You should start a new thread for this tree. This thread was pretty much closed with the sale of the original subject tree to new owners.
I would probably just plant the tree deeper. with the cork being just above the soil line. You won't have "nebari" but it won't look as strange.
As to designing the tree, more photos, with a plain white or plain black background. Take the photos with the lens of the camera level with the rim of the pot. Photos from 4 sides. This will give anyone trying to help a better perspective on the branch lay out.
Oh, and welcome to the forum. That is an interesting corker, I would love to have it to puzzle out on my bench. Rule number one, go slow with corkers. Your benevolent neglect was the best treatment possible for this tree. Don't do anything drastic. Start a new thread and we will all weigh in.
Mull over advice we give, and only do something if it really makes sense to you. By the way, your tree is too old to ground lay off the under stock. So if someone says to do it, they probably have no experience with corkers. You can air layer branches that are less than 3 years old, older than that and the air layer is likely to fail.