<s>There's no UI provided to us</s> Moderators now have the capability to rearrange the close reasons. But we can't edit them; to change one, it has to be deactivated and a completely new one activated.

Personally I think that the _most frequently used_ reasons should be listed near the top. And I have taken the opportunity, when installing a new close reason, to rearrange the existing ones, to that end.

I'd welcome hearing specific suggestions, but I do recommend taking care when closing a question; this really shouldn't be _so_ automatic that there's muscle memory involved.