I can't believe they cancelled halogen for this -blam!-. No offence, but this is completely innacurate: The story is wrong at the moment (they have Spartans fighting at the start of the Covenant/UNSC war), from what the trailer shows the elites are completely wrong (too tall, too thin, too slow and too bulky chest wise... Basically the scaling is all wrong) and the combat is not like the books or games whatsoever (the elites wont run, only using spec ops elites, way way WAY too many banshees e.t.c). So many things need changing from what the teaser says... Halogen was just like the books and games, it really captured halos feel, made by fans for fans...