That engine deserves to not be in a fancied up golf and have real Quattro behind it.
An actual production Quattro isn't going to happen at this point, I can live with that. But that 2.5l I5 putting out 362hp & 343lb-ft seems infinitely cooler to me then the 3l V6 making 333hp & 325lb-ft.
Could do it as a limited edition with RS body work, but call it a "S5 Plus" or "S5 Quattro". Come on Audi it wouldn't cost that much to make it and it'd be perfect. Quattro graphic would also add 1000 cool points.