[PvK]

I'll throw out two arguments on the WP issue.

1) Even in late-game, WP's can make the difference between a planet which can defend itself from a few ships, to one that will be completely wiped out by even a single minescule unite. This forces the enemy to use a fleet to destroy a planet, instead of being able to wipe out an entire system in one turn with a few units.

2) Late-game WP's can destroy ships even in a large fleet, which can be helpful, but more importantly, if they cripple the mobility of an enemy ship, they can stop or slow an entire fleet, saving other worlds from destruction and buying time for the defender's fleet to arrive, and/or making it possible for the fleet to intercept the attacking fleet.

PvK