Any luck out of curiosity?Man, I'll be very pissed off (and happy at the same time, hehe) if this works for me
Trying it now...
You can't use the ground near the power connector or on it unfortunately
If you check around it, it actually goes though an inductor, or transformer, but I am voting it's being used an inductor, before getting to the ground plane. That adds a little resistance to it and I don't think the inductor is charging since there is no power at the connector.
Inductors start off as a open circuit until their magnetic fields are charged and stabilized which then it acts as a short. The reason for the inductor is to help handle changes in current, since the wall supply is a switching supply the inductor here helps stabilize the switching noise from the charger.
P.S. if you have a good multimeter you can check the resistance of the inductor from other points on the GND plane and there should be a bit of difference.
Makes sense. I never tested it, just knew it was one of my problems when first trying mods on the new 3DS.