The first part of this should be "easy", scan a series of images to find images that were taken as part of a HDR series. then it would be nice if there was a preview of that the HDR looked like put together, but that may be out of scope. HDR images could either be placed in a stack or subfolder
Finding images that should be combined to form a pan or focus stack would much harder but equally valuable.
Unfortunately, that's not something we can do. It would require a lot of developer time and run into possible patent issues.