How about focusing on competitive differentiation? When you are just chasing everyone else, small improvements in either direction or just styling start to affect customer decisions. BMW should double down on "the ultimate driving machine". Steal any customer who actually wants to drive rather than just show a badge off. RWD, manual transmissions, best in class steering feel, 50/50 weight, lots of noise and drama. X models with RWD biases and quick autos. Driver focused interiors with fewer distractions. That should be the focus. Otherwise you're so close to Merc/Audi that you'll lose sales easily with small disadvantages.
I cannot fathom why BMW is throwing away the elements that led to its stratospheric success in sales. Just to compete on blandess, overstyling.
Better yet, implement that electric turbo pre-charger
https://www.motor1.com/news/28531/bm...-turbocharger/