Unfortunately this doesn’t help with flame wars where people can go over to a sub thread they get agreement on to harvest credits to then brigade the ones they disagree with.
This doesn't work in the described way. Commenting takes you to zero, only one person could agree to take you back to 1.
So going to a subgroup of your likeminded people would do nothing. You can comment 'like me pls', which would take you from one credit to 0. The responder liking it would take credit back to 1, which is where it was initially. So, nothing gained.
However, one would have to solve the multiple account problem, which every site has to deal with.
