But the "build it everywhere and forget it" part is exactly what makes PD interesting to players like me, who don't run 500 scripts and 20 excel sheets over our empires.
True, but do you really need 5 of them overlapping? I mean, if someone attacks you I'd assume you'd care enough to build a fleet for some additional defense instead of just relying on the PD's to take care of everything
In some cases players have like 10 PDs covering a single planet. Add in the fleets they can produce from those planets and you're looking at impossible odds to overcome. Hecks, my planet with a single PD held out against 50SBS with very little problems. A single PD beat the crap out of some 1000 cruiser and a few hundred battleships I sent against it. I can't even begin to try any sort of assault on something that has more than a single PD covering it and I'm a player with some 900 planets.