That's an interesting idea - an "Uber" for general work. You're vetted for having certain skills. A business needs workers having that skill from say 7pm - 10pm this evening. You can bid in your price. The business owner can then choose the worker they want at the price they want.

What I'm wrestling with is whether this is utopian or dystopian? That's why I say it's an "interesting" idea. I can see it appealing to some people and not appealing at all to others. Maybe there's room for both kinds of people in the labor market? Your "base" workers who are always there and reliable and the "peakers" who are taking care of your excess load at peak times?