The RSG for Pacific has a lot more going on than CC:M.
I have to admit that I don’t know CC:P as well as the previous games and I had never actually used the RSG in the Playbook. There appears to be quite a bit more strategy with the CC:P RSG.
For one, if you select a map with a water edge (C, D, or E), you get to be the Invader if the VP marker is on your opponent’s side after support has been purchased. If neither side is Invader however, the board may be rotated 90˚ which is something you have to keep in mind as you assign your OB and purchase support.
In the support table, there is a chance that Japan can purchase sighting markers for free (in which case, I don’t see a downside in taking all 8 so I’ve included that option in the app). As the Allied player, you may not want to give the Japanese the opportunity to even purchase sighting markers for free if the VP marker is on your side.
Even if you’re the defender, if Japan is Banzai, they still get to set up last.
If Japan is Banzai, Attack, or Invade, they get to choose whether the scenario uses Night Rules then finally, just before cards are dealt, the Japanese player can purchase sighting markers for 1 VP each without affecting the players’ posture.
Summary: Using the RSG in CC:P is very different from CC:M.