Hi RadialFX...hope things are going better for you!
I believe Fences gives you that possibility...in the "Tools" function select "More Tools"
at the bottom (in blue) and you can let Fences sort your icons.
Alternatively, you can arrgange icons in any given Fence by clicking and dragging.
(or bribe Jeff Bargmann to do it for you...
Or am I missing the thrust of your question?