Pulling why?

[Lyth]

There are NO good reasons to do wall-to-wall pulls.

You can see the benefits from reading your tooltips. AoE actions provide more outgoing damage with more mobs present. This translates into faster clears. In addition, a greater proportion of your damage will be under burst, and a greater number of defensive actions will be up for each two pack pull. This translates into faster, safer pulls.

The reason why newer tanks find this process to be stressful is because they mistakenly believe that wipes during wall-to-wall pulls are automatically due to mitigation or healing errors and then take this to indicate a personal failure on their part. While wipes sometimes occur because someone forgets to press a defensive action, it's incredibly rare that you'll die in mid transit due to overwhelming burst damage.

What's more likely is that both supports to burn through their suite of defensive actions due to substandard dps, resulting in a slow death by attrition. In fact, I'll go a step further and say that the main determinant of a group's success during a wall-to-wall pull is group dps. If you have even a single geared and competent DPS with you, you're not going to wipe.

Bottom line, just pull everything. If there isn't enough dps between yourselves to do it safely and you wipe, just scale it back to chain pulls for the rest of the instance. No dialogue whatsoever is necessary for any of this.