Yea, the kickstart thing comes up every year it seems.
A kicker would require:
1) A hardened gear that some how connects to the gears in the clutch side of the bike. And whcih existing gear would you connect to, to turn the engine the correct way to start the bike
2) The kicker assembly with a kicker clutch to disengage the kicker when the bike starts up.
3) A modified side case to fit all that and be strong enough to take the stresses that kicking a 650CC single cylinder would produce and still keep the very precise gear alignments needed for a engine that red-lines at 6500 RPM.
Basically, you need to be a machinist, mechanical engineer, motorcycle tech.
It could be done, but lots of time involved..... and I would rather be riding... .