Make it easier for Horatio to use the Genetic Alteration Lab to convert ‘other’ populations to the original population. Cellular Manipulation is a Stage 4 Empire Development technology, so is usually accessed later in the game. Dedicating a whole system several turns to convert one population is quite a lot. 


Recommend one population per turn, with the offset being that the other species must first be unlocked and Gene Spliced. After all, until you have sacrificed a few populations to the laboratories, how do really know what is required for them to attain perfection?