Kakashi is just an ordinary ninja. Although he has a high talent for learning Ninjutsu, he has no strong body and no blood boundary. After Kakashi lost Shalingan, he was less limited by lack of blue, so he could make better use of his ninja skills, but correspondingly he could not easily see through illusion and enemy movements.
Muye village didn't transplant intercolumn cells to Kakashi, isn't it Muye village? Cheap? However, there are two practical reasons that make Kakashi unable to transplant cells between columns.
First, cells between columns should not be misused. The strength of cells between columns is high, so rafts can be used, and they also have the ability of rapid self-healing without printing. Because of this, after Lieh's death, his cells became a treasure that everyone wanted.
If Kakashi transplanted cells between columns, more people may transplant cells between columns in the future. In this way, the leakage of cells between columns is a disaster for Renhe Muye Village. For strict management, cells between columns will not be allowed to be leaked.
Second, Kakashi's body can't bear the intercellular force. In addition to the cell leakage between columns, there is another reason, that is, Kakashi's own body can't bear the cell force between columns, and it may be countered by the cell force between columns. At that time, your life will be hard to protect, let alone improve your strength.
The strength of cells between columns is too strong. Only one of many children succeeded in the Tuanzang and orochimaru experiments, and that person was the later Yamato. Kakashi is just an ordinary person. He transplanted cells between columns, and the final outcome may be death.
For these reasons, Kakashi did not transplant cells between columns. In my personal opinion, the people who should transplant intercellular cells most are Naruto and Sasuke.