Nothing would have improved Voyager, because Voyager doesn't need to be improved. Just look at the viewership of the Voyager vs DS9 boards. Consistently, more people are still interested in Voyager, whether for good or for bad. And you know why? Because all the conversations that could have been had about DS9 have already been had. DS9 is done. Voyager on the other hand continues to be a source of controversy, a source of intrigue, 7 years later and it still brings out passionate attacks and passionate defenses in people....I remember reading somewhere once that...."It's better to be talked about in a negative light than to not be talked about at all." DS9 is now just a distant if fond memory in many people's mind, whereas Voyager continues to fascinate, even after all this time.