With a single monitor the Windows 7 snap allows you to snap a window to half screen. But with dual monitors you can only snap a window to the outer most edges.

I would love to see a way to use snap a window on dual monitors so that they resize to half screen across all monitors, allowing 4, 6, etc. half monitor applications.

I figure that maybe activating 10 pixels or so in the top (connected) corners of two neighboring monitors as a hot point would probably work without causing other problems when crossing boundaries.

This is a Windows issue.

I recommend learning the keyboard shortcuts instead. I always get the Windows and Displayfusion shortcuts combined, but it's just a matter of trying it with and without the shift key.

I felt the same way too, but then I learned that simply holding down the Windows key and using arrow keys can easily move windows from maximized (up) minimized (down) right half, left half, and even across monitors. This is a Windows 7 shortcut, so you don't even need display fusion running. So I think it's not that big of an issue for Microsoft to focus on.