Basically, what I missed in Prophecy was on the one hand, depth of character (although Maniac was masterfully done), as Blair, Hawk, Maestro, Dallas, all attained incredibly and inanely stupid stereotypical roles throughout the game, making responses very predictable and always a drag... You also had no more choices in the FMV, which I thought was a terrible idea....
Also, on the action front, WCP didnt FEEL very Wing Commander, I mean it was a space sim, but when I play Starlancer i get uch more of a Wing Commander feel than in Freespace... I mean Prophecy. if you catch my drift.