Choosing the official ranking on HeroesWorld.

I mean, what will happen in terms of numbers if a weaker player wins?

If a player with 1400 rating wins against a player with 1800, they will gain 32 points. That's the beauty of it. ))

Let me try to predict what will happen next.
By summer, the gap between the lowest and highest ratings will be, I think, 1350-1900, i.e., 550 points. Top players will not play for rating against low-rated players. In the thread Let's agree to play online in 3-player matches!, posts like "I want to play against a player with a rating of 1650+" or "I want to play against a player with a rating of 1400-1550" will appear more and more often.
Let's say a newbie comes along, and their skill level is very low. After a few games, their rating will drop from the initial 1600 to 1400- and will stop falling, because when playing against players with 1300-1400, they will both win and lose. They are unlikely to play against local pros, because for a win against a newbie, a pro will get 1-2 points, which is not beneficial for them. If the newbie has abilities and motivation, they will gradually increase their rating by playing against players with the same rating.
That's the harsh truth. ))
I'll repeat once again that by playing against an average opponent, a newbie can improve their skills if they want. And pro vs pro matches will give forum users a lot of pleasure and good replays. By the way, this could increase interest in tournaments, because with a certain draw, a pro will simply be obliged to play against a newbie. ))