Sounds like a subreddit waiting to happen imo. I like the idea of having a hierarchy of tags, but I don't know of a good way to implement it without significant other problems.
Sounds like a subreddit waiting to happen imo
You give no explanation whatsoever in to why you think this. Care to elaborate? I'm not the most well-versed in to subreddits. How would having tags like #higgsy, #ecology, #biology all fall under the master tag of #science for the sake of content discovery be like subreddits?
I guess because the extra 'master' tag is kind of imposed. With the example you give, it's an additional tag that probably should be added, but I don't see a value add in doing something users could/should do themselves for them. Like I said, I like the idea of hierarchies of tags, I just think whatever is done, should be done with consideration of existing models(subreddits) and their shortcomings.