Who would be willing to help get this thing as a controller for the game?

[SKD]

Your right, the rider in reality has to hold a part of his mass because he's not on the center of gravity but more inward of it.
You could realize the acceleration forces with a bike movement but the bike could then slowly move back withouth you noticing. while the moving room around gives you the impression of your tilt position. Of course this wouldn't be very practically and the bike tilting as it's done in the example is probably the better solution. In the end there can't be a realistic simulator but a real motorbike

[HornetMaX]

In the end there can't be a realistic simulator but a real motorbike

Agreed. To me trying to simulate the forces you feel or a real bike (long acceleration and brake, lateral in turns) will always sacrifice something else, so better leave the forces alone and focus on other stuff (visual immersion, sitting on something that looks like a bike, control method etc.).

MaX.