Nice idea?
I've always used a created desktop Folder and named it "Unused Shortcuts"
and then would drag and drop dormant Shortcuts into it.
Your suggested method allows better organization so I'll consider it.
And since we're speaking of Desktop Icons I always like to recommend...
>>Iconoid<<
for total Icon management:
# Make Icon backgrounds transparent
# Select any color for Icon backgrounds
# Save and Restore Icon positions for each (or every) screen resolution
# Select any color for Icon text
# Automatically or manually select the best color for the text background
etc.
(it's FREEWARE).