I've been following Cheeaun's work for a few years now. The guy writes plugins for various tools, always hacking away at things. It's quite entertaining to see what he comes up with next.
2. like most of the ios apps out there, there is no thread-level support. All comments are on the same level.
2. ??? Comments threads are collapsible and indented properly.
Are you perhaps not looking at it on a phone? Try it on an iPhone, it's great.