power before nanowar: creation of a power designed de novo before nanowar will result in a singularity -- that is, all bets are off (read: no more house advantage against the survival of humanity).
it is true, however, that a fledgling power would probably protect itself and incidentally prevent a nanowar on its host planet. but what after that? if the power needs to rearrange the planet to provide substrate for its intelligence, would it pause to consider the parasites on the planet's surface? what does the term "benign power" really mean? is this "benign power" to favor the survival of humanity, against profoundly implausible odds? or, do we thank our stars if the power would only make its exodus quickly and leave us untouched?
indeed, next to dismantling the solar system, the exodus seems a distinct possibility. however, if the power leaves humanity as it was, then is not humanity free to pursue the old road toward nanowar and self-annihilation all over again?
if the above were true, it brings us to the trichotomy -- 1. the power may interfere on humanity's behalf; 2. the power may functionally act against humanity's survival; 3. the power may leave humanity more or less untouched. the first possibility is slim to none, the second is moot, and the third would not improve humanity's odds beyond current estimations.
thus, it seems the advantage of creating a power asap is not very obvious. moreover, no better approach seems to be in sight. if one or more of the above risks were not significantly revised, humanity's future looks grim indeed.
xgl