SealMaster, Spores infest unshielded ships, but simply destroy unshielded buildings (turrets, etc.), while having no effect on shielded units. I'm not sure if you're complaining that the spores are over or underpowered, really, as infesting buildings, turrets in particular, would make spores ridiculously overpowered.
trident is meant to do that, to saturate your defenses with relatively low power rapid-fire shots. phanlanx is more for countering things like a jupiter, which fire slowly but pack more of a punch in every shot. also, double rof does nothing to phanlanx, they at most destoy 6 projectiles per second with single rof. double rof doesn't ad anything to that.
I hope I live up to your expectations.