I had an idea... It's probably no easier than trying to convert FO3 MZC and I'm not sure how popular the idea would be, buuuut thought It'd be worth throwing out anyway. Especially with talk of a New Vegas start.
Basically, instead of a FO3 MZC Conversion, a homebrew mod that follows the idea of the Vegas TSC embassy: In this version Zeta and Zeta Crew are already completed and done (by someone else who takes up the mantle of commander). Instead of being the commander here, you join TSC Via the Vegas or Rivet City embassy, rise through the ranks that way, etc. You get access to Zeta, but not as the commander. Instead you get your room in the crew level (which would actually give that some actual use rather than just being eye candy.) The higher your rank though the better your room.
On top of that, if you're a Black Guard or Thunderfist, you might get a note from the Commander suggesting which side you should side with.
Transversely, a FO3 MZC Conversion should probably include or have a patch for the Vegas TSC one too. Basically just dialog changes to reflect your commander status, since as the commander it would make no sense if you went to the New Vegas Embassy and everyone treated you like some walk-in waster.