I find curse to kind of shift Thorns class from sniper to skirmisher come assassin I do not really have an issue with the mechanic itself I just do not think she is classified correctly I very rarely try to follow up charged shots with more charged shots unless I am at long range I just pepper people with abilities.
If anything was going to be done with it I feel it would need to shift her focus towards higher range trade off’s maybe ability damage scales with range on cursed targets. Or consecutive curse stacks apply lower but potentially more debuffs. So
Shot 1 5% extra damage
2 10% Etc
It would also give a reason to take the helix that adds dot damage to it because otherwise i find it very underwhelming to the extended duration and damage helix.