That is a good read. I'll need to read the rest of it later to see if I can pick it apart a bit.
GM needs to consolidate under one or two "brands". Kinda like the Japanese makers it may make sense to have a "bread and butter" line and a higher end line (e.g. Honda/Acura, Toyota/Lexus, etc.).
Holden is Oz so they are safe provided they survive (they will I think). Likewise Opel (survive?).
So who gets the axe? I'm guessing everything except Chevrolet and Cadillac. Which is kinda dumb in a way... People don't want Cadillacs, even the new stuff that is decent (for what it is) has a really up hill image problem in their market to swim against.
In my mind it should be Chev/Pontiac. Chev has always been bread and butter with the exception of the sporting stuff like Camaro and Corvette (and a few others). Pontiac has always had a image of performance and upmarket without being "snobby". Or at least that is what they were shooting for.
Move all the light trucks to GMC. Or keep it Chev and destroy GMC light truck.
Buick? Couldn't care; short of the Grand National they've never made anything I'm remotely interested in. Same for Saturn, short of the Sky (which Pontiac sells as the Solstice) couldn't care.
Ford seems to be on the right track. No bail-out and riding the wave as it were.
Chrysler? Besides the Jeep line I really don't care. Even at that, big deal. They have good ideas (300C and Powerwagon) but I'm not a fan otherwise. 300C is particularly annoying. Could be such a good car if it had brakes and better fit-n-finish. ChryCo interiors are always so plastic nasty.