Naive?! [Sorry, Raistlin. You happened to tell the Senshi of the Ocean that she doesn't know her own element, so yes she sounds very indignant that you told her that]
Not everyone has abilities that deal with water or the ability to use what you call "magic". Not matter what is keeping the dome together, I doubt even you could stop the tidal wave that would sweep through here, if you can manipulate water at all. Considering we can't see the surface, the pressure pushing against the walls is likely massive. So unless you can withstand that unscathed, do not complain about others.
Whether you like this place or not, do you actually expect to see people actively objecting and publicly attempting something like that?