There really isn't a way to reset settings to their defaults. It's not something we've thought about before, or been asked about. Really, while there are settings that are pre-configured, that's just so thing 'work'. Every site is different and it's ok to change things however works for you and there is no 'right' or even 'better' configuration that we recommend.
Of course, if you're running into some sort of issue, let me know, and we'll gladly help fix things however we can.
Thanks,
Alex