(not sure if this is the please to write this, so please feel free to move/erase it if it doesn't fit)
No units are specified almost anywhere.
Including 'output density' would be a useful feature for many users.
It would be super interesting that the interface can direct the user to nomad or other public repositories where the same system was computed. I know it is probably too much work at this point but just to have on the TODO list.