Automatically detect linear threads* and format them in a different way, rather than the current optimized-for-tree-structure way. The difference might be as minor as not indenting, but there are probably a few other things that could be done as well, looking at various forums and bulletin boards for inspiration. Another thing one will likely want to do is to make continuing in a thread-like fashion is easier and branching is harder.

• defined as a chain at least 3 comments deep, where comment n is the only child of n-1.