In the past, existential risk strategy has been useful in both determining the critical areas in which resources should be allocated as well as flagging dangerous projects. Strategy scales well insofar as simply conveying the idea is sufficient to cause people to update.
The construction of a strategy group also compounds well in that strategy can be applied to the construction of the strategy group itself.
Of the various paths we could follow to reduce existential risk, strategy is also the most self-correcting: if strategy is not the best thing to do, how could you know this but by means of strategy?