Re: Trem Claw Ground wire
Electronically, it works fine. But practically, running it from somewhere in the main control cavity is better IMO. The third wire could create crowding in the jack cavity and jack cavity tunnel, and it's also more prone to damage/disconnection there. Jacks get phono plugs pushed into them and pulled out of them constantly, and the jacks can twist. Jack connections break all the time, especially on Strats. I can't say I've ever seen a wire come off of a pot, though.
FWIW, I pass my pot grounds through the pot's ground lug, and then to the pot casing. I solder all grounds to the pot at the same time. I do not bend the ground lug, because it's unnecessary, ugly, and hard to reverse cleanly if you need to re-purpose a pot down the road.