I'm not sure if this is the right place for an idea. I have my notification toasts set to persist for a fairly long time in case I'm looking away from my screen when they pop. When using Snip & Sketch, after I create the image and I want to paste it right away, I have the notification. I don't want to mark it up, but the only way to close the notification early is to click it and then close the app that comes up.
As a user, I would appreciate if mousing over the notification from Snip & Sketch caused an "x" to display which could be used to close the notification, as with other toasts.