[Andrés]

I like it.
Other races such as the Y Vong and the 8472 should also have plagues as an important part of their arsenal. Maybe even the dreaded lev 5.
Finding the cure in ruins sounds good, too bad the plague can't remain dormant for some time. If someone else finds the cure first you may be forced to do some crazy trade to get a working med ship with the cure.

Hmm races with "Standard SE4" would still get normal plague weapons/med bays, maybe I sould lower that to lev 4.