There's more to adding things than being right. And there's more to sentences than words.
What you added were horribly borked sentences that do not follow any reasonable structure. Also, the removal of the reference to Phobos and Deimos in the first sentence makes the "twin gods" in the second a mystery.
Not every version of every character has to be included though. Just linking to one version of characters like Jesse Quick & Impulse and linking to their own disambig pages is enough on the Flash disambig page, otherwise it becomes too cluttered & makes that section more confusing.
I personally find galleries filled with textless covers annoying. One or two relevant ones are fine but a wall of them is not useful.
It takes real time and effort to upload interesting and historical images that display a variety of artists, costumes and character defining events that gives a comprehensive overview of the character.