Hey hope nobody minds me resurrecting this ancient thread. I'm in the process of getting an original Xbox (gorgeous green Halo edition) modded and was hoping to do this mod (x2, two controllers) along with the internal DVD dongle mod.
This Xbox already has the X3 chip, X3CP, installing X3IR kit. Planning to share the X3IR's infrared eye with the DVD dongle. Also planning to install relays so that if a wired controller is plugged into ports 1 or 2 (where the Logitech dongles will be wired) or port 3 (where the DVD dongle will be wired), the wired controller will override the internal mod. Found a guide on how to do this from way back in the day... Also going to have two green LEDs in each controller port.

My question is mainly about the reception issue, and whether anyone has successfully done this mod with multiple Logitech dongles. Which is the better option, cutting away metal shielding or wiring an external antenna wire,... Or both? Ideally I need these to work from 10-15 feet away... Is that hoping for too much?
After I get all of that decided, I just have to figure out whether a ring of green LEDs around the jewel is overkill or whether it would contribute to the subtle accent I'm looking for with the controller port LEDs.

Cheers!