What is the use of different meta sites for different Stack Exchange sites?
I believe a meta site is for discussing the features, bugs and questions relating to a Stack Exchange site, so a single meta site would be a good place to discuss all the things in one place.
Another question: is the Convention badge for a respective meta site required to be eligible for a moderator election for that site? This part is a little confusing. If a user has a good reputation and required badges on a single meta site then, that should be sufficient for him to be eligible for an election on any child Stack Exchange site as we can be sure that he has the knowledge of how a Stack Exchange site works.
Please let me know your thoughts on this. Thanks.