My basic feeling about Reb Nachman is that important aspects of reality were revealed to him. Or as one person put it, "He is one important part of the big picture."

The problem is well known to be the cults  and groups that pretend to be going by his approach.

The general rule of cults is they are never satisfied. And the danger is they can get a person off track. And that usually happens by means of the the good ideas that are mixed up with bad ones.