Voyager really loved the time travel/paradox episodes in season 1, then moved in a different direction for seasons 2 and 3. Well, time travel is back with a vengeance to end season 2 and begin the third. It's probably best not to get too nitpicky with this one... There's typically some glaring continuity issues with any time travel-based storyline. 'Future's End' is enjoyable and not quite to the point of absurdity, so it gets decent marks.
One thing I can't ignore though... Braxton's ship is technologically superior to Voyager by 500 years... and they manage to easily disable his weaponry ? That's like the Enterprise vs. a Steamboat.