I don't know what the exact numbers should be, whether it's something like a 200-250 point rating gap, or just taking the current rating system and saying anything only worth 1-2 points should just be dropped to 0, but players shouldn't be racking up points for pummeling players substantially worse than them to an absurd degree. You shouldn't say, have a 500 player beating up sub 100s to gain 1 point at a time in order to rating climb. There are several games where the rating loss is not going to be able to accurately reflect the true chances such a player has, where the higher rated player can win dozens of games in a row without issue vs players a few hundred points below them. A player in this game can grind on the ladder, dodging players of anything resembling a real challenge in order to obliterate the low level pool. This makes it annoying for players who get paired vs this person, either for constant cancels or for the low rated players who end up facing such players and get stomped. If you're facing someone with this kind of rating gap, this shouldn't be a "looking for points" scenario.
I could see a case for making such games 0 gain/loss for the higher rated player in such a gap to let high rated players just looking for games to accept whoever and not have to worry about the outcome at all vs newer players. This lets them get in games and allows them more leeway to make the experience enjoyable for the weaker player without having to worry about losing a ton of points for a loss. But the main idea is to stop higher rated players from predatory gaming.
I could see a case for making such games 0 gain/loss for the higher rated player in such a gap to let high rated players just looking for games to accept whoever and not have to worry about the outcome at all vs newer players. This lets them get in games and allows them more leeway to make the experience enjoyable for the weaker player without having to worry about losing a ton of points for a loss. But the main idea is to stop higher rated players from predatory gaming.