The Roughnecks series is, in general, a very high-quality production. Trackers is disappointing not only because the disc contains only a single new episode, but even more so because the production quality of this episode is not nearly as high as it has been for all previously released campaigns/episodes.
I enjoyed watching the episode as a filler episode to fill us in on what happened in between the Klendathu and Homefront campaigns. But the animation is simply not up to standard I've come to love and expect from the Roughnecks series.
I sincerely hope that, whenever Sony finally gets around to having the final episode finished and released, it will be of much higher quality than the Trackers episode. It has been a while since the Roughnecks series was first produced and aired, and with advances in computing power it is reasonable to expect the final episode to look at least as good as the episodes that have been released previously.