I think Latex support could be added in another settings panel where the dump folder could be specified. At the same time, Greenshot could copy a specified code snippet to the clipboard so the user can paste it into her/his editor of choice!
PNG or JPG and specify 256 colours if wanted.
Copy Code to Clipboard
Something like that. So components are:
1. A Save folder
2. A FileName format
3. A File format
4. Code to automate to clipboard.