Legally, it is helpful. It is a good idea, but the main idea of the previous military regime is to play the divide and rule policy. For example, in Shan State they created many self-administered zones. Since then, they have had a number of arguments in Shan. In some areas it is helpful, but in Shan State, it created more problems.
Appointing ethnic ministers is not so important, in my view. The most important thing is equal treatment for all Myanmar people with one standard. That is more important.