How about using one of the [xxx-literature] tags?
First off, it's clear that new users asking questions about books by authors that don't have tags yet are going to have to use some sort of generic tag, rather than the author and work/series tags which they don't have enough rep to create.
- If the question is about something like symbolism or meaning or character-analysis, all well and good - they can use that tag and ask a higher-rep user to add the author/work tags.
- If it's about a short story or poem, they can usethey can use the poetry or short-stories tag, and ask a higher-rep user to add the author tag.
- If none of the above tags apply, they can still use a country/language tag. Now that we've reached a rough consensusrough consensus that we should be using, for instance, russian-literature on all questions even about individual works of Russian literature, these tags provide an easy way in to the tagging system for new users without enough rep to create their own tags.
Thus, if someone asks a question about a long novel by a French author who doesn't have a tag yet, they can use the french-literature tag (which the question should have anyway) and wait for someone else to create the author/work tags for them.
It's worth noting that this is what actually happened in the case that motivated this meta post - Ash ended up posting her question with just the american-literature tag. So this seems like a practical and workable solution.
What if the relevant tag even for the whole body of literature doesn't exist yet?
I've been generally against using tags such as english-literature or american-literature, since by default (this being an English-language site) the majority of our questions will fall into these categories. But perhaps we should start using these tags more, precisely so that new users can use them as suggested in this answer.
Also, yes, we don't yet have tags for every language and country. If someone asks a question about Miloš Crnjanski, they'll have even more issues since we don't have a serbian-literature tag yet. But hey, the site is still young - as we grow, and broaden our horizonsbroaden our horizons, these tags will get created. Eventually it'll be hard to find a country, language, or culture which isn't represented somewhere on our site.