Really? It doesn't make much sense to have bonuses for automation since it's largely a group effort. And that's probably the main reason why those performance bonuses are disappearing.
Trading is very much about managing and taking on risk. Even if there are computers managing trading - managing risk is still human driven.
In most trading shops it's becoming more difficult to estimate the contribution of a single individual because technology is more important than before, and plays a role in how competitive you are. That doesn't make them any less talented, educated, hard-working, etc. It just makes it more difficult to know their exact contribution. Which means that their compensation will not necessarily fall down, but will become less performance-based.
In the trading world, as an employer you are disincentived to give the keys to your model - aka your secret sauce - to all your employees. You will reward only a select few who you trust to stay on board, manage the model, continuously improve on it to stay pace with the changing markets. If you give the keys to too many people, eventually they will jump to other shops, copy your ideas and your edge will deteriorate.
Whoever build a good model get a good bonus ?