If you care about gaining rep on the isle, then it turns into a horrible grind. One of the worst I've ever seen in WoW. Having to kill like 1000 of these elites(which are annoying as hell to fight) is just ridiculous.
There needs to be more quests/daily quests to speed the process up. Most people will not get to exalted, especially on high pop realms, for weeks.
At least it's not near as bad as collecting 2000 bloody coins. It actually used to be 10000 coins you needed to collect for the achieve.
MOP has had so many "grinds". If I was a PVE player I would've stopped playing long ago.