Currently priced at $29.99, Halo 2's inception into the Platinum Hits would certainly be a good thing in terms of price. The bad side? The slick cover art of Master Chief has been cropped to make way for all the Platinum Hits gobbledeegook, and includes a big ugly inset reminding everyone that it's the "Best Selling Xbox Game Ever." The new box also reminds players that Halo 2 is playable on 360 (provided you have a hard drive).
If you have yet to pick up this modern classic, the price drop certainly makes it a good time to reconsider a purchase. When this beauty hits brick-and-mortar shelves, though, we recommend hunting down the old-box versions and requesting the new lower price. Nothing says "uncool" like owning the "greatest hits" version.
[Update: Microsoft has confirmed the news. An official announcement is forthcoming.]