A Cayenne turbo is a monster of an SUV, I'd happily daily one of those but probably not with my own money and it won't ever be as special to me as a Porsche sports car. The GF sports watches are awesome but the pice is challenging and I think the classic line watches are more special and unique to GF.
My guess is that moving to the flat vs inclined balance wheel was necessary to thin down the watch, s2 is thick. Personally I'm not convinced the inclined balance did anything anyway so I'm not averse to seeing it go if it makes for a thinner watch.