Must admit I am loving the RP and story much more than WoD, but I fail to see how anyone could consider the leveling content challenging. For the most part it's a case of gather up as many mobs as you need for the quest or bonus objective, aoe them down with ease then hand in for easy xp. Sure you may need to heal up or eat afterwards, but I've yet to go below 60% hp on any fight. For reference this is on my ret pally alt, that went into Legion with mediocre gear around item level 716.