Tip sharing as a concept is well extended.

Having seen the wrong people get rewarded bonuses, RSUs and raises all the time. You are just better off with a salary band/pay grade and give money uniformly across the band.

Ideally 'top performers' are supposed to be rewarded for 'top performance'. But in any subjective evaluation you are just dealing with cooked up documentation to prove a person did something, therefore deserves extra. Pretty much any and anyone's story can be twisted and narrated in a way that could sound positive or negative, to reward or punish respectively.

You are better off with a tip pool and paying it across the band.

I've also wondered about it (though I know that bring a server is still by no means an easy task). I think Freakonomics had an episode on topping and reported (advertised?) some restaurants that split the tip between servers and cooks, or just don't let the customer tip but pay their employees more, upfront.

Yes, tips are bullshit

I think you're confused.

You're describing "server wage" laws, in which employers are free to steal tips up to the difference between real minimum wage and server wage per hour. In effect, servers in these states make above minimum wage during peak times and at most minimum wage off-peak. But they have to work off-peak or they don't get scheduled for peak hours.

In WA, this form of wage theft is illegal. Your statement, "minimum wage for servers is lower than for untipped workers" is false in Washington state, which is where the wage theft in TFA took place.