Least Favorite Trope: The dystopian government has technology that is miraculous, free, and desperately needed by the population. They withhold this technology because… ? I mean, at least give us a reason, like, “We cannot share this with the plebes because requires exceedingly high resources.” Or, “We have to withhold this because it caused a catastrophe in the past.” Most of the time it’s just, “The ruling class has superior sci-fi technology and you can’t have it because we’re just dicks that way.” (Cough Elysium cough)
Second Least Favorite Trope: The idealized revolution. Our plucky teenaged hero throws off the shackles of oppression and defeats the evil overlords in a remarkably easy coup d’etat. Everyone else in the world immediately agrees that they will live in peace and harmony, and nobody really seems concerned for the consequences. There are no splinter factions, no one competing for power, no massacres, and no purges of political enemies. All those soldiers and ruling elites who died are assumed to have been bad people who had it coming. There are no remaining loyalists or common folk who just want to be left alone. There is no disruption of essential civil services, because running a country is totally something any random teenager or eager young space cadet is qualified to do.