This is a pathetic unoriginal concept, that only Rockstar Games could successfully produce at a much superior level of quality when it comes to graphics, storyline and content.
In fact, after GTA V is finally released, and since the location in this version of GTA is based on Hollywood and other recognizable spots around Los Angeles, it would be great if they made an expansion to GTA V that covers Las Vegas!
The DLC would obviously have missions based on a separate story line similar to what Rockstar Games did with the add-ons for GTA IV.
Similar to this game 'Vegas' but heaps better if I had anything to do with it! In the GTA V DLC you can gamble (Just as you could in Red Dead Redemption), and once you have so much money, you can buy penthouse suites in anyone of the casinos, Mansions, a Lear jet or a helicopter as well as business establishments like clubs, bars, nightclubs, strip joints and work your way up to the top by purchasing your first casino and possibly more afterwards, as well as owning some of the professional golf courses, where you can actually play a round of golf against some of the game's characters that your character aligns himself with throughout the game!
Some of the earlier missions that could be included in the DLC whilst your character is building up his bank account and his reputation to become a casino owner and a future God Father could include a casino heist similar to the one in 'Oceans Eleven', earning some extra cash as a hit man, where you have to take scumbags out into the middle of the desert , pop them and then bury them, without being noticed. One other mission I can think of that would be awesome, is if the story line involves one mission where you're asked a huge favor personally from the God Father of Vegas, who's concerned about his son's state of mind since he is always going on about aliens and space ships, and how they are after him to do all sorts of weird experiments on him.
The son wants someone to sneak into area 51 to take photos and steal some evidence that Aliens did crash in Nevada and that they do exist, and if you're successful in getting out of area 51 alive with an artifact , or at least photos to prove that they do exist, or photos to show that area 51 has no dead aliens or parts off a space ship at the site.
Now if your character gets through the mission successfully, he will be rewarded handsomely with a huge amount of cash. Not only will the son reward you, you'll be able to call on the God Father of Vegas, if you need a favor or run into trouble.
Gee, how cool would it be working for Rockstar Games and coming up with the missions for the GTA series!