People always complain that there's a lack of originality from its community, but I don't think that's true. Recently we've gotten buildable elevators, buildable vehicles, Nexus' command gui, buildbot, and all sorts of other things. These are by far my favorite mods ever, and they're moderately new still. There are really great builds and servers too.
The real problem is that once you've been here for several years, you know a lot about the game. Everything is kind of old news. Once you first get it, everything is new and exciting, and there's plenty to explore and learn. But if anything, the game itself has only gotten better, it's you that has changed for the worse as far as the game's fun goes.