Surely you want a volume manufacturer to create more jobs and of course offer more variety & choice to us petrol heads...
I reckon any off-shoot of the Porsche-VAG group... starting with just 1 marque and then one by one bringing other marques to supply the whole of NA's/SA's needs, accept for the true premium Bentley, Bugatti, Lamborghini, & Porsche makes of course, which for marketing reasons all need to be made in their respective countries of origin.
BTW - Did you know that Porsche/VAG bought Scania (posh trucks/rig's) recently...
...if memory serves me right that means that the Porsche-VAG group now own 9 (or 10 if you count VWCV as different to VW) automotive marques and have large shareholding's in 2 others - WOW !!!
M.