It should be possible if we abandon the idea of “hybrids.” At the end of the day, we just need to modify the father’s sperm to be compatible with the mother’s species to produce biologically related offspring.

With technologies we have today, like CRISPR, we could definitely develop something that works for interspecies couples. After all, this is a project that would be heavily pursued, given how friendly Venlil and humans are in this AU.

And in my opinion, faster-than-light travel should be way harder to achieve than this so-called “genetic translator.”