Great plug in! I was looking for something very similar, a set of keyboard commands I could bind to macro keys on my keyboard for aligning icons. I spend a ton of time on organizing the icons, and it's inconvenient to mouse up to the icons each time. For whatever reason, LabVIEW doesn't have keyboard shortcuts for these commands. I tried to adapt what you wrote to better fit that need.
However, I've hit a bit of a dead end where my effort hangs the Quick Drop. I'm not sure what I'm doing wrong, as far as I can tell the part I wrote would work in a regular VI. Could somebody take a look and offer a suggestion?