"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'd be most likely staff will post news blogs regarding the upcoming opportunities, 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.