Essentially you need to grab all of the threads from the node using a query, remove any due to permissions and authors being ignored, etc.
Then pass the resulting thread list array to the template and loop through it applying the HTML and CSS to display them.
You set the order in the query, so yes you could order it on title.
200 threads on one page shouldn't be an option but you could paginate it.
That would require additional code and queries.
You would likely need to create a small add-on to achieve that.