Since you are just setting out with this SE, you might appreciate to hear about my learning experience: I've been a moderator on Bitcoin.SE for almost two years now, and I have spent a lot of time on fixing tags there: Tagging can quickly grow rampantly, when not cultivated.
E.g. when I started the clean-up, we had lots of
- meta-tags (describing the type of question instead of the topic), e.g. definition, opinion, comparison
- ambiguous tags, e.g. future, computing, offline
- too broad tags, e.g. mining and transaction are on more than 10% of our questions
- duplicate tags, e.g. jargon, terms, vocabulary, and terminology
So, even when I'm quoting myself, please consider these ideas to evaluate tags:
What properties do good tags have?
- Descriptive. Does the tag add valuable information when it is added to a question?
- Representative. Can the tag be the only tag of a question?
- Unambiguous. Does the tag commonly mean the same thing for different people?
- Confined. Does the tag create a specific, well-defined category?
- Meaningful. Can you see anyone at some point subscribing to the tag or searching for related questions by using the tag?
- Constrictive. Can you see anyone using this tag to ignore a topic?
- Unique. Is there a very similar tag that is more popular which could be applied instead?
If a tag's usefulness is contested, think about whether its name or definition could be improved, but finally rather err on allowing it.
There are already many tags that should be improved or culled now, before they are on dozens of questions:
development, public, data, debugging, status, size, prunning, vr, usability, updates, computations, by, application…
to name a few. Believe me, it's easier to do it now than later.
I'd be happy to help or advise, if you are interested. I'm hanging out in chat, and will be looking at this SE from time to time. :)