I can see why outstanding contributions won't make a big dent in salary, but they absolutely have to make a huge difference in bonus. If I have an outstanding year my bonus should be at least an integer multiple of a more normal year.
SWE work can be super impactful depending on what you're working on (especially in startups), why can't we share in more of the glory? In some companies, if you run the numbers and divide that result by the total number of hands that have touched the project you can STILL come up with net revenue or even profit that is 100x+ what you're being paid. And not seeing more than a token piece of that is just wrong.
If I knew that performance could net me 2x or more of my salary, you can bet I'd be a lot more motivated to work hard.
The minimum amount a promotion was worth. The impact on the base salary (and the slight impact on the bonus) if you were considered important talent.
The impact on the bonus (and only slight impact on the base salary) if you had outstanding contributions last year.
The overall base increase for everybody based on seniority (higher for more junior positions).
The latter more or less covered inflation. The others improved on that (sometimes by quite a margin).