There's a problem I've always ran into with RPGs (even though I love them anyway) where once I've played through the entire game's content several times, I already know what's going to happen and I just end up mind-numbingly grinding through it out of boredom. Once I've witnessed the story, it all becomes a skip-dialog grind-fest... In the case of AEs, they don't really solve that issue, but they do offer a more efficient grind. You wont find yourself wasting a ton of time flying all over paragon city looking for a mission entrance with mostly minions and a few lieutenants inside that you quickly burn through.