Hi MT,
Wanted to say something before I reverted it; but I recommend we keep the subheading style prior to the edit you just made on the article. I think it makes it easier to distinguish individual issues and looks more aesthetically pleasing, as well as conforming with the Sample article layout and all other guides present on the wiki.
It also allows for the addition of subheadings within the specific issue which are distinguished from the overall issue.
Regards,
David