there is a "beta" version of Manually Sort Folders, not still present in addon page but you can find it in github https://github.com/protz/Manually-Sort-Folders/issues/199#issuecomment-1751930028More or less everything works except reordering the sub...
YES, sort folders manually should be the first thing in a program like this.and also opening the program in a specific folder is a fundamental function. (which luckily with manually sort folder still works)