I wonder if it is enough for XLink to simply send the packets through a networked tunnel or if it actually needs to modify the packet payload somehow. The consoles might be able to handle everything as long as they are able to communicate with each other?
The same advantage existed on LAN, with competitive tournaments setup to trade host advantage for team color advantage. The last in person CE lan I attended, we were playing on modded Xboxes with a patched version of the game that allowed a third box as a neutral host, and added an on screen timer. Happy to expand on the details if anyone is interested.
Shout out the {Halo 1 Hub, xemu, Halo Modding Reclaimers, Invaer} Discord members. I'm sure some of you in this thread are already there. :D