The more I play SCC, the more I think SCC and SCB are more optimized for panther and assault. Playing ghost is not really a fun factor unlike the old SC games. For that matter, I think SCB should at least be played panther or assault (not over use). We all hope SCB is more classic since it is still in production but you can't change the fact that the series is taking this way. Therefore, you play it the way it's meant to be played. Though, I am not ruling out ghosting in SCB, it's possible and can be fun but the game is more optimized for panther/assault.
Therefore:
SC1-4: Ghost player SCC and SCB: Panther/(Occasional)Assault

Overall:
GHOST PLAYER