It would be lovely to know the feature-set differences between the four (or is it three now), prototypes they have upto SN15 as it stands... It would be awesom

It would be lovely to know the feature-set differences between the four (or is it three now), prototypes they have upto SN15 as it stands... It would be awesome to know the outcome of "fixed six ways to sunday" resulted in WRT to how they fix this issue, it would also be cool to know if the solutions they come up with for the CH4 Methane Leak, are transferable to other systems on the machine.