Brian, you beat me to it. I was going to say to graft on some branches on that middle section, or maybe graft an apex there.
(I learned to graft at Boon's Intensive. While walking around his garden and talking with him as he watered his trees, he pointed out trees that had been grafted in the past. While I won't say that most of them had been, many had been. 30 to 40%, maybe. That was an eye opener. So, you know how we all say we want to work on superior material? He would take a great trunk, and then place new branches where they were needed. After 5 years, you couldn't tell it had been a graft unless he told you.)
(I learned to graft at Boon's Intensive. While walking around his garden and talking with him as he watered his trees, he pointed out trees that had been grafted in the past. While I won't say that most of them had been, many had been. 30 to 40%, maybe. That was an eye opener. So, you know how we all say we want to work on superior material? He would take a great trunk, and then place new branches where they were needed. After 5 years, you couldn't tell it had been a graft unless he told you.)