In a future age of technology and machinery, humans no longer need to perform physical grunt work.
The most menial of jobs are performed by very simplistic machines. These are not learning or intelligent AI, they are simply robots.
The jobs which require problem-solving or other characteristics which cannot be done by simple robots have been abstracted into various games. We had once depended on incredibly intelligent problem-solving AI, but they turned against us and we no longer trust computers to make those level of decisions anymore.
On any given day, a person can fire up their favorite game - or even a new one. They can participate in practice sessions, which don't count towards their score. In fact, in all games it is required to reach a certain level of proficiency before being allowed to play in a way which influences your score. If you were to play a regular session and fantastically failed for whatever reason, the cost of the failure is taken out from your score.
Your score is very important. It is essentially your money - and it is what you trade for goods or services.
Obviously, some games will be more popular than others. The importance of the game being played is always weighed against the number of people able and willing to play it. - In this way possible score values can be manipulated to encourage players to play games which need more players.
Are there obvious drawbacks that I need to account for in this setting?