I would not like to see the Latin Language StackExchange co-opted into a Classics StackExchange. As much as I'd like to see a Classics StackExchange succeed, many of us, including me, have a backlog of hard questions about medieval, renaissance, and even contemporary Latin, and the Latin Language StackExchange promises to be the best place on the Internet to ask them.
Here are some example questions that got at least 10 votes:
When did the term “a fortiori” originate? Which known written work first contained it?
How much different were medieval latin dialects from different parts of Europe?
When did U and V become distinct letters rather than alternate forms of the same letter?
Who created the word "computatrum"? Why is it different in Italian?
What conventions existed when Latin was still a spoken language for transcribing foreign words into Latin? (This was the most highly upvoted example question. Technically, Latin is still a spoken language, but it was widely spoken up to around 1800.)
Here are a couple more, which didn't get 10 votes before we reached the commitment phase, but which I think are excellent questions for the Latin Language StackExchange, and they illustrate the vastness of the topic of post-Classical Latin:
Please see also this discussion questionthis discussion question and this answerthis answer.
Probably the best thing to do is just propose a Classics StackExchange. Nihil obstat.