The kids will become Government agentsits pretty obvious ones you see the latest (as of 11/20/2010) update here◊.
The person in Lydick's mansion with lightning-powers was ChloeThink about it. The timeline matches up perfectly. October 12 in-comic (7.11), Fletcher told Chloe that if she wanted answers, she'd just have to find Mr. Reynder herself. The Saturday after (7.24), so October 14th, someone did find Ari, mentioning he's "not an easy guy to track down" and that getting "some answers would be a nice start". Ari agrees, but on condition, waving a vial of serum 43. 8.10, Tigris refers to the lightning-person gauding her as "twit", so they're female. Lightning-person, for her part, seems to know a bit about Panthera on a personal level, taunting Tigris with "brute" (impling they know that this specific team member is a Lovable Jock) and calling her "fat" (an insult that's almost exclusively hurled at women - how many unrelated people would assume the largest team member is female?). 8.14 takes place November 8th, which is three weeks after 7.24 - three weeks in which Chloe went AWOL from school and the newspaper club. On her return, she's evasive about the club she was investigating and immediately quits the newspaper club - possibly something to do with new "extracurricular activities"?...