[The Law]

I like idea of SPG and CBS.
That way you have Euro,Asian and niche at each level.The branding wouldn't be much different from today right a bit more refined to the plans-markets of those brands.I'm really not sure why Gm didn't map this out before the re-do of Saturn b/c Saturn could have been the Asian branding but i guess with China being there number one market....
Of course with any move that Gm makes now will have to cut at least one model from a brand.If Saturn goes to BPG than Aura,outlook and sky,If Buick goes to Caddy-Saab than 9-3 & 9-5 sedans which need to be renewed/replaced with AWD hatches anyway.Buick could be near Lux FWD sedans-Cuv's,Saab Modern sporty AWD, Caddy RWD-SUV.Pontiac need to be low-mid (Scion-Mazda) Asian fighter at any cost anyway.Buick could fill in the missing Asian link (infinite/lexus) for the higher brands.