I think that's the conflict in of itself. Emma, after making amends with her parents and BFF Regina, seeing the life she could've had. Supposedly she had worked out those issues and chose Storybrooke over the real world - but can she choose it over the fairy tale world? I'm not saying she'd move to Wish Realm, but can she be happy knowing what her life could've been? Those kinds of questions I think do fit into S6's loose narrative. However, if you broaden the scope to all Storybrooke citizens, it becomes messier. Some people had worse lives in the Enchanted Forest and got better because of the curse. Others' lives were ruined, making Storybrooke as a whole look worse. So I think if the focus was kept only on Emma, there's still something to mine in the story.
One of the main problems with the Wish Realm was that it changed Emma herself instead of just her circumstances. The writers tried to make the Wish Realm look worse by turning Emma into a sniveling coward. But if they had to the balls to say the Wish Realm was actually better, that would've flipped it around and created an interesting dilemma. How can you be happy with your current circumstances when they're worse? How can you be satisfied with your life knowing most of your suffering could've been avoided? How do you accept that? Granted, this was just a totally "fake" alternative universe and not a timeline change. If this were Emma having to choose whether or not to go back in time and change the future for the better, that would've been a whole lot more sophisticated of a problem. But as it stands, the Wish Realm is pretty weak sauce. (Except maybe it isn't because it might be real?!)
Having Wish Henry there was such a cop-out. In a no-curse scenario, she wouldn't have Henry or Hook in her life. Because of this, Hook would've been a better character to reel Emma back in than Regina. She wouldn't have her BFF either, but her BFF was literally responsible for it all so that's dead on arrival.