The BRBS will charge 16 individual 18650 Li-ion cells (yes there's 17 slots but one will be empty) with a common negative. Electronic devices to be brought along will accept 18650 cells or will be modified to do so. In the case of cameras, a swichmode camera battery charger will be built as there's not enough room in a camera for a 18650 cell.
1. Use a brushless motor (Hobbyking 2KW outrunner or something like that) to reduce friction.
2. Allow the dynamo to run as a motor to help getting up the steeper hills (some torque on the front wheel would really make things easier). Of course it would have to be used sparingly.
3. Following on from the above, maybe even a winch attachment for hills that are more that 45° steep...