We need to be able to give different Issue permissions depending on the Issue category. For example, we need the CDM principle designer to be able to edit all issues raised under the category CDM, which will be created by the rest of the design team. We do not want to give full edit powers, as there are certain issue categories such as Cost where we need to restrict visibility. We currently don't have a way around this. This limits the usability of Issues and steers people away from managing all project related issues in one space as they cannot be managed properly.