Same here, I can only concur with what has already been said. In my work, spine is a key part of the development process, but the lack of relative exporting just really struck out as something really quite rigid. It's exacerbated too when using a form of version control to upload files as we tend to avoid including the full path of somebody's hard drive, not just for privacy purposes but mainly because you cannot guarantee the same directory structure is going to be used across the team.