There are no guarantees. However for better or worse I think Stotts is a known commodity, and sometimes a calculated, educated thought out risk needs to be taken to move forward.
I don't blame Stotts for this year, but I also dont believe he is capable of leading them to a championship. When he did it with Dallas he was an assistant and theres a major difference between an assistant and a HC, as an assistant being the friend, the brother of players is part of the job. When you’re a HC you can be a friend, but you also need to take the role on of a disciplinarian. Sometimes its time to say yes I care about you, but right now your habits need to change and I have to be harsh, because I need your behavior to change like a parent, rather than a brother. I think Stotts (at least my perception of him), is rarely the parent and often the brother. His players love him and my distant opinion of him is mostly positive as a person too.
caveat: I obviously don't know how his private dealing are, this is just my observation from far away. Its just an opinion and I realize it could be wrong.
X’s and O’s I also question his ability to make needed adjustments in games.