They can't go back to their roots without a dedicated chassis. Look at the size and weight of the cars they're building from. Even the E30 M3's had nice luxury for the day. They took the smallest/lightest chassis BMW made and made it stiffer, a bit lighter, more aerodynamic, and put some bigger wheels on it. They they made a wonderous little engine that for the day made serious power, especially in the later Evos. Even if BMW did that same thing to the current 3 series it would still be heavy. They used high tech even back then to overcome things and go faster, that's no different now. They disappoint me with every new M but without a different car they will never get back to a light nimble car.