Hmm...I didn't come into the series until 3, and I thought the cinematics were great, but the game play was okay. The excaliber rocked though, looking forward to "sticking" one of those again!
Four I thought was REALLY well done from the plot, to the cinematics, to the combat - I loved that cloaking dragon fighter - it was mean and nasty looking as was armed to the teeth.
Five I thought the script was terrrible (too many Top Gun plot rip offs), but I have to admit the sets and acting were't too bad within the constraints they had to work with. However, I did enjoy the newer high end fighters like the Panther and the Vampire, which thrust vectoiring engines were just a fantastically novel design. I also enjoyed the missle lock on eye candy, and the better job on the technical aspects of a military standpoint i.e, the introduction of the SWACS ship akin to the AWACS c4 aircraft of today.
However, the WCS Prologue exceeded my expectations in a tremendous amount of areas - the script is very well done, the clowing around banter is pretty realistic, and the "look and feel" is spot on for the series all the way around. Kudos to all of the team!