Editing permissions are currently based on memberships in a product, there is no option to control them by individual users.
In a situation when we have a critical report that we do not want everyone that is part of a product to edit, the only other option is to restrict editing to the creator only.
It would be beneficial to allow a small group of people to edit a report in this case, thus protecting the report from accidental changes but also ensuring there is always someone available to make changes, in case the creator is not available.