Anybody here that lives in Vegas and makes a living at the live tables? What stakes would it take to make a modest living? Would NL 200 at the casinos be enough?

First thing would be to check the cost of living vs where you are now. I use this often with job offers.

I also found a pretty good https://www.pokerkingblog.com/2008/04/07/thinking-about-packing-up-and-moving-to-las-vegas-to-play-poker-full-time-heres-some-free-advice/ on moving to play poker in LV. The math is pretty complete.

Living in Vegas would be my dream. To be able to participate in every tournament I can't afford. The home of the Player, I would call it

Most people in Vegas have learned not to gamble!

Don’t get offended, I didn’t write this article, despite this funny story, I will probably move to Vegas just to play poker.
https://www.vice.com/en/article/dpwwbx/reasons-why-las-vegas-is-the-worst-place-ever-821

Playing NL200/300 could be enough to start out but you will have to manage your bankroll and expenses very carefully. If you are crushing the game you can easily make 2k to 3k a month while you grind your way up to 500NL.