For people who, like me, want to edit the tag-wikis and add/modify information in them and are willing to do the research, it's difficult to find tags that have wiki information on them already - you have to sort through all of the tags to do this. I propose a tab in the 'tags' section for 'stubs' (for want of a better phrase) for people to identify tags that have no wiki and go off and do the research. Rather like the 'unanswered' section in the questions.
Finding tags without Wikis can already be easily done via Stack Exchange Data Explorer. For example: