Employees, at least a lot of them, ask for bonus systems. They seem to love bonus systems and shun/dislike companies that have a proper bonus system: none.

Bonuses (and other shenanigans) only kills team work and team spirit and make it an everyone against everyone game. And don't tell me that you get too many slackers without a bonus system. Slackers are actually usually pretty good at playing the bonus game, i.e. doing exactly what is required to get the right numbers to get a bonus. Whether that's helping the company or the team in the long run is none of their concern.