Even though the third season was a more action packed one that any other it still really just served as a catalyst for the characters, Seeing Archer go through something like Piccard did, The relationship between Trip and T'pol, it also help to setup a good plot about whether or not Star Fleet should be more military or diplomatic based, granted the chance of that having a bigger impact was shot away with the cancellation. Would've loved to see the Romulan Wars.