At one point, people were quickly levelling up their characters by dueling with other players. One person would set their stance to full defensive so that one player would level up light armor while the other would level up weapons. The devs wanted to stop this. Now, you do not get experience when dueling.
My wish is for this action to be reversed. Here's why:
1. It would encourage cooperation between players.
2. People have found ways to quickly level their characters anyway.
To level up light armor, you just need to find a bunch of weak creatures, get them all to attack you, and then turn your back to them. To quickly level up weapons, you just use ruined weapons or weapons in poor condition.
So to summarize: If the fix is reversed, the only thing that will change is that players will have more motivation to cooperate with one another.