I totally disagree with the OP's premise that doing nothing may conserve party resources. Not taking actions is always counterproductive. Every skipped player turn just increases the odds of an enemy action that damages the party.
Even if the action is simply to move into a flank, using aid another, or similar "passive" assistive cooperative actions skipping turns entirely is always a bad idea.
And, in 4e games, At-Will Powers use no resources anyway.
Even if the action is simply to move into a flank, using aid another, or similar "passive" assistive cooperative actions skipping turns entirely is always a bad idea.
And, in 4e games, At-Will Powers use no resources anyway.