This is probably one addition to the do's and dont's. I am not a PVPer myself but did PVP dailies when leveling up my toons. That said, certain things should be common sense.
When you are attacking, a common strategy is to have most players fighting on one door and 2 players (with a stealth-er) to distract defenders on the other door and plant the bomb. I have no idea how many times I have seen people continuing to fight on the door with no bomb, after the bomb has been planted successfully by their teammate on the other door. The bomb planter is likely to get cc-ed and killed and the bomb defused if no backup arrives, but nope, a lot of players prefer to continue their awesome duels.
Anyway, really good job! I would like to start to PVP more on my new toon, and this is a wonderful guide!