A GT-R is a fundamentally different car to the 1M. I haven't driven a gtr so I might be talking out of line, but the main difference is that the 1M has soul. You can improve on the 1M by tweaking it, make it faster and more tamed, but to me it needs to retain its fundamentals to keep its soul.
My solution is giving what the 1M deserves without changing the inherit solution the M engineers have given us. It will not have EDC, or any clever torque converters, but focusing on lighter weight and improved components.
Macan Turbo - White
1///M - Valencia Orange
X3 30d - Alpine White