1. Option to not unroll a Fence on mouseover, or at least delay it. I'd just like to be able to stack all my rolled up Fences on the side of the screen, and drag them out in the middle of the screen when I need them without them unfurling immediately. Perhaps just an option to open them manually with the mouse instead of automatically when you touch them.
2. Some kind of utility to find out what fence an item is in ... some program icons could belong in several categories (Fences) ... for example, I can never remember if I stowed PDF utilities in my MS OFFICE fence or my UTILITIES fence. And Zeus forbid you should accidentally put an icon in the wrong Fence altogether -- I just want to ask "where is that thing?".
3. Fences within Fences so you could create a hierarchy of sorts.
4. Have Fences generate and maintain a Menu matching the arrangement of fences so you have an alternate way to launch programs.