Everyone knows that gambling is part of game since fallout 1, but it can't be added in Fonline cause it becomes in way to farm money. So there is one simple way to add it to FO and prefer farming of money - let players gamble with players.
How it will looks like ?
1st - Player 1 must to find/buy deck of cards or dices.
2nd - Player 1 must to find opponent to play with (lets say Player 2).
3rd - Player 1 come to Player 2 and say:"hey dude, lets play cards?" (and of course Player 2 is agree).
After what Player 1 puts deck of cards/dices item in active slot, and use it on Player 2. Player 2 see opened window "Player 1 wants to gamble with you" (just like when you trading), Player 2 can confirm or decline, Player 2 confirms, after what opens window similar with trading window, but with button "play" instead of "trade", here players makes a stakes by any things from their inventory (money, items, recourses or whatever). After stakes are done and players ready to play they push "play" button and ... you are the winner ! or not ...
How it will work ?
Chance to win, of course, will depends on your skill and luck, but there is must be some random numbers in formula, to let players play more then one time. I mean that even worst player must have a chance (minimal, but its still a chance to win) to win game with professional gambler.
I suggest to use this formula: <your gambling skill>/<opponents luck>+<dice roll(1-50)>. Total result will compare with your opponents result, player who have bigger number wins.
So ... lets say Player 1 have 235 gambling skill and 6 luck, Player 2 have 150 skill and 10 luck.
Player 1. 235/10+(lets say)11=34
Player 2. 150/6+(lets say)21=46
34<46, so Player 2 wins !
Why we need it ?
1) For RP, there can be some kind of events for gamblers in New Reno casinos with prizes.
2) For entertaining in not PvP time, if you haven't much gambling skill you can play with guy who have roughly same skill as your.
3) And maybe for Profit ...
Sorry for my English, i hope you get my idea.