The best comics editors have the smallest egos. The worst ones feel like they have to justify their salaries by making changes just so they can leave their fingerprints. Every creative medium has those guys, and they're all loathsome.
Mark WaidI was a teenager, and I went to see the Superman movie, and up to the point I walked into that movie, I was a kid with no direction and no real purpose and no strong parental figures, and kind of aimless. I walked out of that movie knowing that whatever my life was going to be from then on, it had to have something to do with Superman, because something touched me emotionally with Christopher Reeve's performance.
Mark WaidWhat makes a good editor is staying the hell out of the way as much as possible. ... If you're a DC or Marvel or Dark Horse or BOOM! editor who's assigning work, then if you did your job properly to begin with, then the people you've hired can be trusted to do what they do without excessive meddling. The ideal situation you're shooting for as an editor is to groom a collaborative creative team to the point where their work sails effortlessly through production and the most you have to do is fix the spelling and the commas.
Mark WaidOne of the greatest sins in any story is false suspense. The kind of 'suspense' that disintegrates the moment you give your reader one second to think about it. And it's an easy trap to fall into, so watch carefully for it. If your story hinges on the question, 'Will Superman be pushed so far in his battle against Lex Luthor that he'll have to kill him?', or if your big cliffhanger moment is, 'Wow, is Spider-Man really dead this time?', then I understand Food Lion is hiring.
Mark Waid