I am looking forward to communities feature as well if it is done right. I know a few places I really enjoy leaving comments in and being engaging. They have a great desire to create a better place on Steemit for their kind of engagement such as comments and having a discussion.
It will be interesting to see how that feature shapes the community. I just hope it makes finding certain types of content easier to find. Current system I might as well use an outside search engine to find things most of the time.