What to Gamify?

Here’s an idea:

Instead of gamifying training, why don’t organizations gamify their employees’ career paths?

For example, a person who completes a project “quest” could “level up” to better office equipment or a better location for their desk or a chance to be on a cross-functional team or etc. Offer visible/tangible rewards – rewards that come more frequently than promotions to a new position and that are available to everyone who levels up, not just a select few and the rest get weeded out.

I wonder if anyone has tried this before and, if so, if it worked?