Its official. The series is now epic!
Oh thank God they got rid of Kes! She was useless, but at least they gave her an important role in the Scorpion two-parter. I just wish they developed the whole Ocampa, Caretaker thing. Ah, well.
Now to Seven of Nine. Many people who watch Voyager think Seven of Nine was introduced for eye candy. Let me give you my opinion.
First off. I'm male. And yes, Jeri Ryan is very attractive. And I'm sure that the producers were trying to boost ratings with her. Having said that, I'm a huge fan of Seven of Nine, not because of the actress, but because of what the character symbolizes. You see, Seven of Nine's character development mirrors Voyager's journey directly. As Voyager is now attempting to leave Borg space and return to human space, Seven is leaving the Borg and returning to humanity. In an earlier review, I made a similar observation with the Doctor. But this connection is much stronger in the character of Seven of Nine.
Season Four also does some good foreshadowing. Yes, the Hirogen and the Krenim had foreshadowing, but there was something much deeper. Some people noted that Janeway and Seven had a mother-daughter relationship similar to the Captain and Torres. However, what happened to Seven was that she switched "collectives". She was once part of the Borg Collective. But now Voyager becomes her collective. This is explicitly stated by her in Season 5's "Drone". And as such, the Borg Collective is controlled by the Queen. And Voyager is commanded by Janeway. So Captain Janeway has become Seven's new Queen! Which leads to the foreshadowing--if Janeway is the new Queen, then the Borg Queen will inevitably come into confrontation with her over Seven of Nine!!!
This is why Voyager gets so good in Season 4 and on. There's a real overlying villain that stands as a complete obstacle between the ship and home. And Janeway has a personal, parallel, and complete villain in the Borg Queen. This gets drawn out in Seasons 5-7, but Season 4 lays the groundwork for it.
Ultimately, this is exactly what Voyager needed. The first two seasons were a complete waste. The writers screwed up the Caretaker-Ocampa storyline and instead substituted ridiculous enemies like the Kazon and the Vidiians. Season 3 corrects this problem and Season 4 introduces Voyager to a villain that serves as the ultimate harbinger of destruction, the Federation's greatest enemy, and the final obstacle between the crew and getting home.
That's why Season 4 is awesome!!!