It's an old post now. Most of what we're seeing is more Bungie methedology than references. Similar to how all UNSC vehicles were animal names and Covenant vehicles were named after spirits, we're seeing naming conventions for the enemies and Guardian vehicles. However, I still think the Ghost, your own AI companion, may be a calling to the Covenant vehicle. Also, Destiny will feel similar to Halo in some respects. An AR is still an AR. A Rocket Launcher is still a Rocket Launcher. It'll all feel familiar to Halo players, but eerily different. I'm excited for that.