Or obey you. Rand had to waste so much time because he had to worry about weiramon and others plotting. Even your hard Rand respected Darlin more because he came willingly. Not everyone is logical and destroying people would NOT make his followers more logical it would make them less logical.

If Rand could destroy a nation because they don't obey him without him earning their trust then the followers he has acquired will start to believe they are expendible. Maybe you think they are. Maybe your right. but consiser the logic of this.

If they are truly expendible then why does Rand need to subjugate them? Either the people are needed and therefore should be treated with worth or they aren't needed and are only there to feed his ego.

People will never unite behind him if they don't believe he is saving them, leading THEM.

Just to take Moiraine's view the wheel weaves as the wheel wills. It is plausible to believe that Rand will automatically be successful as the wheel wills it. So he does not need MY support and if he is the horrible man he seems to be WE must be prepared and reserved to destroy him as soon as he accomplishes the wheels will. Rand's behavior can and does affect his leadership stability. Do you think he could keep his Aiel in check with fear of death? already his disrespect of them makes them consider leaving him high and dry. Would dark Rand let them defy him? knowing the Aiel would such behavior lead to an even grander exodus?

There are so many drawbacks to Dark Rand because he is ultimately counter productive. Tuon would have agreed to the treaty if she had not felt his evil. The ta'veren pull on her was immense. But Rand made himself undesirable and untrustworthy. imagine if all his followers felt that way?