There should be no confusion between the coming cataclysms and our goals. They are not related. The cataclysms are something that happen regularly to the Earth, have in the past, and will in the future. The cataclysms are more or less traumatic, in any given cycle, depending on where the earth is positioned in relation to the comet when it comes through. There is nothing that changes this situation.
Let us address first our goals, to genetically engineer a Homo Sapiens who carries enough Zeta Reticulan genetic structure to be more intelligent, more telepathic, more caring, less violent, and we might add, not prone to fat. Should the Earth be a planet not prone to cataclysms, this would occur anyway. The genetic infusion would be more gradual. At some point, we would elicit the cooperation of the populace being genetically engineered, as at some point the general orientation of the populace would be Service-to- Other. These parents, in all likelihood, would want for their offspring a better life. On other planets, where the transition has been made from 3rd Density to 4th Density, this has been the process.