"So who in particular will represent the community and get special access to items and drops? I refer to COD:AEAE for this."
This would be handled by wikia, not by the sysops of the wiki. As activision will be talking with wikia first and us second it would be most likely that staff will post news blogs regarding the upcoming opportunities with activision and potential goods being given away, and then contact further the ones they've selected to take part. This means it will be impartial to all users and in accordance with COD:AEAE.
EDIT: Singling out individuals to get content is how activision has been proceeding with advertising Call of Duty games for years. Singling out high-profile youtubers to be rewarded for advertising their game. whereas we put in as much effort in a different format.