I love the tag wiki feature, but I just realised there could be a use case for combinations of tags. For example, the all too common question type "Give me regular expression to parse html?" It would be useful to have a defacto response on the regex+html page.
To me this sound like one big, huge can of worms for little benefit.
Firstly, it would require a massive re-architecture of the way we store tag wikis.
Next up, how would people find these wikis? We will be creating little bits of content in areas where potentially nobody looks.
I just put usage guidelines in the Tag Wiki, like so:
The only problem is that the Team refuses to allow functionality to make the tags stand out, so they're easily missed.