They should ditch the battery pack, electric motor and range extender and replace it with the motor and transmission from the HP4 Race.
Remove the rear seat, replace the front seats with the buckets from the M4 CSL, and give it the M4 CSL steering wheel with paddle shifters for the sequential trans. Put it on Öhlins coil-overs, Brembo brakes, wide gold BBS basket weave wheels with Pilot Sport Cup tires. Give it box flares. Call it the i3Motorrad