We may be operating on different definitions of what it means to "break" a setting. For example, how useful is flight by itself, really?

Many abilities seem potentially very useful if other people don't know you have them, but become much less useful once you get found out:

• The "energy blast" type abilities common among wizards and superheroes are not terribly combat useful in a setting with modern weapons. Their big use would be assassination: slip past metal detectors and pat-downs, baffle detectives... but once you get found out, no one wants you around and the police know the otherwise inexplicable burning death was probably you.
• Mind-reading, if it has standard limitations on range, similarly becomes a lot less useful once you get found out and banned from everywhere.
• Super-senses on a level comparable to what's already possible with technology: lets you spy on people from a distance without anyone wondering what you're doing with those binoculars... otherwise not so useful.