In Lore we have heard about guardians that have not seen eye to eye with the vanguard. We know about the faction wars.
Why not add something like Dark Guardians, something in the game with hard as hell AI?
Who else would like to see rogue guardians?
We could use a Sith to our Jedi.
Or if you are a 40K fan
A Chaos to our Space Marines
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Edited by Meaty-Yeet: 12/17/2017 10:48:36 PMSorry I didn't understand till the last line. Thank god someone else speaks tyranid. Don't you mean chaos space marine as normal chaos would include daemons.