The idea is that sometimes your stone distribution is slightly off and not worth the DP for a full reset.
So, we could have an Ascension Upgrade or something to be able to either:
- Reset the USP of a single stone only
- Reset a specific amount of USP from a stone
Similar idea to the beginning of the game where you can only prestige all minions and then later you can do it individually.
The cost of that new reset option could either be the same (1 DP per USP) or a "tax" for doing it individually, similar to the first minione upgrade (0.8 the DP only).
It could encourage people to do some experimentation here and there without paying the full price of a reset.