It’s not the rewards that people are complaining about. It’s the incomprehensible demotion and promotion to brackets that’s the issue. The fact that there are a number of unknown factors incorporated in the calculation which guild is promoted is destroying a lot of peoples enjoyment of GW.
This can be easily solved by just using only the GW points to determine the promotions and demothios actually. The more points you score, the bigger the chance for promotion to a higher bracket (which leads to better rewards). Which essentially means there is zero incentive not to play to the best of your abilities, so there is no incentive to exploit the system and get demoted a bracket to get easier matches.
The only thing that you might want to include is that to be promoted to a higher bracket you’d need to get a fixed percentage more points than the guild you’re going to replace in the higher bracket (to “correct” for the easier matches that you might see in lower brackets).
It’s not that difficult a problem to solve actually. The biggest issue is that there should be total clarity in the rules of a competition, which there currently is not, and that’s what is frustrating a lot of people at the moment.