And in FOG we use Partclone and Partimage. The problem is we are using previously created services to complete the required task here. FOG is open source, it uses all open source pieces to complete the puzzle. These are free.
Ghost is a privately created and operated, it uses it’s own services specifically designed for Ghost, not a piece designed for something else but achieves the same goal. That is why ghost costs. They also have a development team… I know your heart is in the right place, but as long as you keep comparing FOG to another imaging solution that is maintained by a full team of devs, FOG is always going to seem to be lacking.
My corporation uses FOG because it is free and it is versatile.
Personally I tend to enjoy the fact of being able to over come my obstacles with my own knowledge of linux. I realize that not everyone has this experience, but if you continue to compare apples and oranges eventually your fruit will rot if you don’t eat it 🙂