Just started using PM 4.6, not sure if it's a new feature or if I'm just noticing it for the first time...but the IPTC Snapshot is a great idea!
However, I just looked up keyboard shortcuts on your "help" page and I don't see a a shortcut for the "Take" portion of the IPTC snapshot. If there is one, please let me know what it is. If not, the I am requesting it for future versions. Thanks.