BYOND's Bug and Feature Trackers are really well done. As a game developer I would love to have access to those systems for use with specific games. They could be "created" and linked directly from a game's hub, much the way that Members can already use BYOND's built-in forum system.
Assuming that this is doable, it stands to benefit both sides. My players wouldn't have to visit a different site and create a separate account in order to report bugs, and you'd be getting more site traffic from people who might not otherwise be visiting BYOND regularly.