Posted by: privet caboose
You don't understand canon.
Also, Reach is a prequel, which makes it impossible for them to add any new species of covenant, without destroying canon.
Canon = A story's plot or story. It makes sure everything fits together like gears in a clock. If You threw in an alien race in Reach, than there's a jam in the gears, and things don't match up anymore, creating a plot-hole in the canon.
That's a complete misconception.
Canon cannot be conflicted with.
Making a small really fast and weak ape and calling it a Brute would break canon.
Making humans know all about forerunners would break cannon.
However, adding to cannon is ok. read up on canon and ret-con.(Not trying to be mean, jsut saying, it's actually a bit complicated, especially to quote from memory)
Ret-con is retroactively changing continuity. Say there is a series of 8 books. Book 1 has a map of the continent it all takes place in, no lakes.
Book 7 has no map, but the story was written about a lake.
Book 8 has a rectified map with a lake in it.
That is ret-con.
Bungie can add anything not mentioned in any book or game, as long as it doesn't directly conflict with established fact.
As an example, you can have Halsey say they are in a Dysonsphere within it's own dimension(ghosts of onyx), however, the character says it, but it is not necessarily fact because it is not mentioned by the author outside of that one time.
The character could be "wrong".
[Edited on 11.22.2009 11:18 PM PST]