Let's consider a match of 2v2 where:
- Terran is in team with either Zerg or Protoss;
- Terran can't wall-in for both bases together (their bases are too far away from each other).
From one perspective Terran should close the entrance to their own base with barracks/supply AND bunker. In this case, their 4 marines get 400 more hit-points.
From another perspective, very rarely will opponents attack a walled Terran. Instead they will go to the unwalled Zerg/Protoss. In this case, Terran will spend 100 minerals per each bunker build without real value: instead of taking 2 additional marines per bunker to help their teammate, they will keep concrete on the trash at their own base.
What do you think of that: should the Terran build bunkers on their own choke behind the wall?
Thanks.
Best Answer
Your question seems to be Should the Terran build bunkers as part of their initial wall-in?
If that's your question, I would advise not building bunkers as part of the wall. The cost of building a very early bunker just in case an opponent is rushing is not worth it. Yes, you can salvage the cost back later, but spending 100 minerals on a bunker instead of a depot or 2 SCV's early on will slow down your economy and production.
If you are building a bunker to counter a specific threat, that's one thing. But building one just on the off chance you're rushed is over-committing in my opinion. The rush may be in the form of zerglings or zealots, in which case your bunker doesn't help at all (since you are already hiding behind a supply depot wall). And as you said, some people will see your wall and just head for your teammate, also wasting the bunker.