There is an existing rule that I like where you can change all but one 1 to any value of the die. This mitigates some of the weakest rolls. However, there are other weak rolls, such as having more than two 2s or more than 3 of any number. It would be nice to be able to change the extra dice in these situations too.
If the total is very low, such as an 8 by getting 2 2 3 1, it would be nice to be able to adjust 1 die as well.
If the total is very low, such as an 8 by getting 2 2 3 1, it would be nice to be able to adjust 1 die as well.