I never played the Korath too much in DA, but I noticed now in TA that I can skirt around needing some extreme world techs by using spore ships. I learned Adv Toxic worlds so that any world I take is running at 100%. Well, that is the only extreme tech I have. Now if I take out a Radioactive colony or such with a spore ship, the planet turns Toxic and I'm now good to go.
Anyone else notice this? This may be a good point to talk about hybrid worlds. If a planet has heavy gravity, how would the toxic atmosphere really change that fact?