User blog comment:AntiScootaTwo/Michael Condrey teases Emblem Editor in Advanced Warfare/@comment-1854594-20140927045738

Advanced Warfare's campaign will be "longer than the last few" http://games.on.net/2014/09/call-of-duty-advanced-warfares-campaign-will-be-longer-than-the-last-few/

Personally at this point I don't care about length as much as I do about quality. Make something too long for the sake of being long and you can hurt the pacing.