I am a mechanical design engineer with a love of bicycles and their properties.
Consider exploring a low profile behind the fork braking system.
Belt drive drivetrain system.
Optimized hydraulic shifting with electronic signaling.
Composite/Ti exotic material disc brakes. Ceramic disk.

I have designed unique frame designs, wheels, suspension systems which utilize an arched cylindrical elastomer system. Way Cool!
Designs which replaces the "triangle" frame approach usually seen in today's bikes.

Keep in mind bike usage. i.e. Road bikes need weight savings. MTB's need ruggedness, etc.

Good Luck!

SolidWorks Rocks