I think a general principle to follow is that most tags shouldn't have "language" or "conlang" in them. Exceptions would be when it's explicitly distinguishing conlang and natlangs, or when there's already a set phrase with "language" in it. Language change is one such example, so the language-change tag for questions on natural developments of conlangs is appropriate.
We've had a few questions about what is required to be a "complete" language. I'm not sure what a good tag could be for those. Idea: what about conlang-mvp? Too cute?
What we've settled on (though feel free to still contest these tags)
And what about a tag unnatural-features for questions about designing conlang features with no parallels in natural languages?
Having both phrase and single word requests at ELU is a mess. Lets simplify things from the beginning, and have a single tag: phrase-requests.
The texts tag is a meta tag, and I don't see how it would be useful to have. I'd say we burn it.
conlang-history can probably just be history - we're not here to discuss world history! I'd include in this tag both the history of constructed languages as a discipline, as well as key moments in the development of particular languages, from the human side of development, though not for questions about the development of languages themselves, which should be language-change. history for questions about people, language-change for questions about languages themselves, if that makes sense.
words seems like a pretty useless tag. Can anyone make a case for it?
Maybe vocabulary-development for questions like these?
I renamed it to vocabulary.