Spawned by this question on Board and Card Cames Meta regarding forcing the name of a game to be in the title of the question, it occurs to me that including the tag with the most popularity in the HTML
<title> element doesn't always help with organic search.
Take for example the HTML
<title> for this question:
<title> strategy - Is it better to try to reveal a Traitor early, or wait until later in the game? - Board and Card Games - Stack Exchange </title>
From an SEO perspective, it's much better to include the name of the game in the title:
<title> shadows-over-camelot - Is it better to try to reveal a Traitor early, or wait until later in the game? - Board and Card Games - Stack Exchange </title>
This kind of title would be much better for organic search, so much so it's even in Google's search engine optimization starter guide (see page 4, "Create unique, accurate page titles", this qualifies as more accurate).
The feature request would be to indicate, via the tag wiki (it seems the most logical place, but it's not essential to be there) that the tag should not be a part of the HTML
Then, when rendering the HTML
<title> of the page, it would take the tags in the order of number of questions asked against the tag, excluding any tags which has this flag set.
If by chance all the tags have the flag, then it would default to the first tag with the most number of questions, as it always had.
It makes a good deal of sense here because there are a number of tags shared across games. It's also applicable to any SE site which has general tags which are relevant to the question and not considered junk (I imagine this is the deal at gaming.SE as well) but do nothing to help with searchability on Google.
Additionally, this would be great on Stack Overflow and other SE sites that have some issues with questions with junk tags, allowing us to apply it those tag wikis right now to get them out of the title.
Note that in the latter case (junk tags which can't be burninated or nuked from orbit for some reason or another) it wouldn't justify the existence of those tags, just allow the pages that have them to get better organic search because they happen to have a junk tag applied until it's weeded from the system.
Finally, this would have to have some sort of requirement to set the flag, as only trusted users (or groups of users) should have the ability to affect the rendering of such an important page item in this manner. That I'll leave open ended, but there would have to be some way of restricting access to this flag.