Confused as to whether you're referring to the ratings for a repeat versus a new Flash? The bump was two weeks ago, apparently the part of a Flash audience not interested in a repeat. As to whether the series will have a proper ending, it can't, not at this point anyhow. A proper ending would be the victory of one side or the other. The show won't let the Mutant Age actually Dawn, no matter what the ads say. And there's no way the MU can possibly win, not least because the show won't admit the government is the Big Bad. Also, the MU doesn't actually have any plan but killing the IC, because killing for the status quo is a happy ending. Twist will be killed and Reed will develop powers, although a metaphor about how a fifty year old might grow up to be anything is a little strained.