why did rose (dave?) want to destoy the green sun? also why did john's crew have to initiate a scratch? and how does the rumor replace the green sun? or something like thag?

The Green Sun was the source of Bec Noir’s power and they wanted to destroy it so he wouldn’t be so powerful. John’s team had to initiate the Scratch because their session was messed up by Jack Noir and their Battlefield had a Tumor in it. The Tumor didn’t replace the Green Sun, it exploded to create the Green Sun. Rose and Dave traveled to the location where the sun was supposed to be but it wasn’t there yet because they had not created it yet.