[advantage20]

Scott,

Provided that BMW very likely will follow their nomenclature's logic (3 Series sedan --> 4 Series Coupé + GranCoupé, 5 Series sedan --> 6 Series Coupé + GranCoupé...) and name the "CS Coupé" the 8 Series GranCoupé, wouldn't it make sense to pair it with a 2 door variant (8 Series Coupé) as a luxury GT coupé playing the role of a 7 Series coupé?

The Ghost Coupé will probably be a notch more upmarket anyway, and yes the 6 Series is definitely more upmarket than a mere 5 Series coupé and is closer to the 7 Series price-wise, but Mercedes do have their CL Class as a luxury coupé variant of the S Class which if I'm not mistaking sells pretty well, so isn't an 8 Series Coupé + GranCoupé duet imaginable above the 7 Series?

The two 8 Series variants would of course share development costs, therefore styling and engineering (as will do the 4 Series variants and the 6 Series variants) and that would allow BMW to finally offer a large GT V12 2 door coupé again!