You can never go wrong with the Humanis, especially when they're *right* from time to time.
Nothing horks a team off like teh Humanis LT pointing at teh Ork and going, "See?! See?! I told you all along!"
Also had two plotlines running with Vampires (Which, IIRC, are the only Threat from 1 or 2 that never got a followup!) ... The first was bog standard "Take over the city" stuff, but the other was way more fun. Lesser Vampires were being rounded up and captured, then "Milked" for their narcotic venom. (What, you thought they used those fangs as straws? Hah!) Thsi venom was then turned into teh hottest new street drug, Bliss. Bliss made you feel *wonderful* and lethargic, but was also teribly addictive.
...
There were many an interesting twist in that series of runs.