IIRC: 1) Yes, in theory, any new installs should just require the initial CD install plus the patch and be able to work. Hopefully, CL has changed the production code used to burn commercial CDs to one without the Interlok system and all patches applied and will sell them once the current batch is sold. 2) Probably no real advantages if you already have it installed. But initial installs or subsequent installs (ie, after a hard drive reformat) have quite a lot of benefits; some of which you mentioned.