Speaking of theories, had one recently that was a bit interesting. We were talking about Ruth and how her problem of hurting anyone she might have sex with might be solved.
Based on info so far, MC's power works via his metagene binding to a donor's genes and then "transmitting" their power back to him. What if MC eventually figures out a way to directly control that transmission and possibly transmit the other direction (even if just temporarily)?
So hypothetically speaking, if MC got super strength or durability, he could "transmit" it to other LIs in a potentially group sex scenario with Ruth.
Also could tie in to the theory that MC might be able to reverse the vaccine or give others powers, and maybe could even tie into the theory that MC was engineered, particularly if the research was in a way to give people powers.
And depending on how long it lasts, a big orgy could be a way to "power up" the team the night before a big mission or something.