When will you add the ability to disable "auto-arrange" feature?
Creating a fence for each icon individually so they stay in place is a bit of overkill to get what should be a simple check box.
I'm guessing here, but most people who are looking to enforce some order upon their icons will want the icons to go exactly where they place them.
I'm just a bit OCD and having to hunt down an icon that moved is extremely annoying.