On multiple subquestions in the same post
One of the major warning signs for a question to be "too broad", or to use the new name "needs more focus", is when it is asking more than one question in the same post. It even says that in the close reason itself:
This question currently includes multiple questions in one. It should focus on ...
In a general response, of course people will disagree, that's an inherent given where anyone has to come to a consensus and it is the reason the SE network works. You've got to think as well that when it comes to the various close reasons a lot of them are subjective in there understanding by default and will always be and so you won't get people agreeing on ...
Big Hero 6: The Series was a fun series to watch, at least for the first two seasons. I thought I wouldn't really enjoy it because I didn't remember much of the movie, but it definitely served as a good branching point off of the movie.
It's available on Disney+ and Disney XD On-Demand, if you want to watch it.
In response to your second question about which to use and how to tag, I think we should keep the current state of affairs.
The manga tag is mostly (173/183) applied to story-identification questions. Adding manhwa and manhua tags wouldn't make it easier to either answer or find those questions, so I think it would be counter-productive.
The user posting ...
I quite liked a few this quarter.
This one because the complexity of the world created by Lucas means there isn't just one singular answer but several.
Why did Mace Windu and the Jedi Council refuse to raise Anakin to the rank of Master?
This one because it was surprisingly difficult to find a canon answer.
In Star Trek, are food replicators also used by ...