IMHO, one of the best (and underrated) "clean desktop" apps was an object dock with multiple tabs. So instead of having multiple fences for each group of related apps, you had a single dock on the desktop and you could click through tabs to get to the grouping you wanted.
If there was some way to integrate that into a Fences option, I think that would be terrific.
Now, some people would tell me to just use the Object dock program. But isn't that no longer supported? I think the latest support was for Win8?
Just a thought...