Thanks for the quick update! I have yet to find a TV Agent in the wild, but I did acquire a sleeper TV Agent at the Office--this didn't reveal the location of the office, so I'll have to try out your suggestion--I'll update this post if I get results.
I did find one thing that is arguably a bug--Although fighting Superpowered minions at the Secret Lair doesn't net you any crimes, if you try to leave the lair and get followed by conservative swine, fighting those minions WILL get you murder/assault charges. A case could be made that since it's outside the lair, the government would know about it.
Also, I have a suggestion--doing secret Terra Vitae missions is basically a skill check for those that go on the missions, and failure means instant death for all involved. I have a feeling this would be a lot more coding work, but maybe if you fail a mission, instead of having all those agents instantly get killed, you could be placed in a site surrounded by hostile, alarmed conservatives that the agent(s) need to escape from. It would still allow the raw randomness and importance of having skilled agents, but also would have at least a little bit of player control in salvaging the failed mission.
UPDATE: Loveslaves/recruiting doesn't seem to reveal the location of the offices. I have yet to successfully try interrogation since it's hard to do so against moderate/liberal characters.
Also, Supervillains spawning in the wilderness seems to crash the game.
Finally, you are correct about the TV Leader's house--It appears in National LCS mode properly. I think I will simply start anew in National Mode next time, and to recommend to anyone starting a game to use National LCS Mode, otherwise you'll not be able to work with Terra Vitae.