Frequently when I'm taking screen shots it's for a specific purpose. Eg Expenses, a Project, a presentation. What I find very time consuming with all screenshot tools is they they always put the captured images in a bucket and it's then my job to go and find them. A really exciting feature of a tool like this would be to have the option to put all the screenshots into a new folder, even if that was inside the screenshot folder. Just so I could know where they are for a future date. An example could be that I'm busy working on Project A and see something that would be really useful for Project B and C, I could capture those images and have the tool offer to file them in a folder, I select B or C and carry on with what I'm doing. This keeps me focused knowing I can get back to those items later.
