The reputation increase/decrease in MoP Remix is not just a display issue.
ALL PLAYERS in MoP Remix can’t complete the Campaign: Landfall achievement without grinding for DAYS instead of just finishing the campaign chain quest in one sitting of an average of two hours. It’s on all sub-reddit WoW forums and here too, and people are mistakenly thinking that is just a display issue. It is not.
Important note: It is not just Dominance Offensive and Operation: Shieldwall reputations the ones who are affected in MoP Remix, I read several other factions affected by it where as a player you cannot get to Exalted as quick as before the Pre-Patch for TWW.
Quest rewards from Campaign: Landfall such as reputation like the 3000 reputation with Dominance Offensive or Operation: Shieldwall just gives you 250 reputation with a 2750 reputation decrease. Please note this 3000 reputation reward IS INTENDED for the player to finish the Campaign: Landfall achievement in one sitting and not just grinding the reputation for days.
With MoP Remix ending soon this is a HUGE issue that needs to be solved ASAP, since there are limited rewards behind an achievement completion and even more now with returning players due to this new Return to Azeroth promotion.
My proposal for a solution: Get rid of the achievement requirement for the Class Transmog set or make the daily quests gives you a TON of reputation since the chain quest reputation reward is broken. Since it is the same game client as TWW, I highly doubt the devs will find a quick solution for this.