Thank you for the assessment of the tree Al, I agree that it's not in any way a "good" specimen of a Japanese built tree. But I do think that lots of trees that come out of there, are indeed sort of throwaways for them.
I see a tree that was not looked after in the development process until it got out of hand and there was too much thickness in places to cure, so it was just sold off. Although the large chop site is well healed, so it's not been totally mishandled. I didn't spend a fortune on this little tree, but I see something in it's oddities. It brings to mind a mastiff, or clydesdale in small form. Blocky instead of delicate.
I will not change this feel the tree has, instead hope to capitalize on them. Part of the thing that isn't visible in photos is that there is movement on those two thick branches off the trunk, so they are not as ungraceful as they appear. I agree about the roots in the current back of the tree, but I think the front roots are not as bad, they taper instead of just chop off, (part of the reason for choosing this front) I'll try to bury the back a bit.
I see beautiful old trees with these same branch aspects around me, although it's exaggerated in this small form. I actually got the tree because of these, not in spite of them. But that's just me

You have the right word- fascinating.... and will be fun to see how it looks in 5 years.