I've disabled six drannik hubs and only got one power core. Should I be or ?

I'd be , you'll get so many more chances to get the cores, and then theres the eventual upgrade to encephelon cores, i wish i could get more trap drops right now.

well i currently have a full set, so im

i think that they are an uncommon drop, but nothing compared to getting the Terraformers or QSE's which are almost impossible to get, even the higher ranked people can confirm this as not many have got a QSE and most have a hard time getting terraformers, unless they buy them.

if people aren't getting terraformers it's because they're not doing enough npc'ing to see troop carriers...
though i'll confirm i just saw my first QSE since lvl 100-ish a few days ago (i'm lvl 540 now)

drannik cores... don't worry if ya don't get them... it's really just to hold you over till you get the encephalon cores...
i'm still seeing okkilor at my lvl, and hit both okkilor and xiloy for the traps (you can never have enough traps on a planet you're protecting), though often get cores from okkilor... and usually get 30-38 CTP from the 19-38 CTP scrap value