Originally Posted by
Leo_Ames
I don't understand your question. Most of the content is still there and accessed like it always was, by entering the DLC section of the ingame menu of whatever Xbox game you own that had any, or by placing in a Xbox Live Arcade disc if you want access to the original XBLA.
There's no need for it to be on Xbox 360's marketplace, and none of it is there. It's done the same way when playing a Xbox game in backwards compatibility mode on the 360, I've downloaded stuff for several games in recent months like Crimson Sky, PGR2, Pirates, and a few other titles. Only exception might've been Halo 2's final map pack, I seem to remember that could be purchased using MS Points so they might've temporarily made it available on marketplace for 360 owners who didn't want to use a CC.