Thank you for the answer, Kreighund
While I think the SUBs are much improved over Revised OOTB, I feel they are still to vulnerable and not very cost effective.
Do you know if Sub Detection rules or Convoy Raid type rules were ever considered, either during the development or playtesting phase. I suppose they may have been considered too complex by either WOTC or Mr. Harris, but I do feel this is the one thing that the game is really missing.