[Sirtel]

Personally, I find patches highly useful, but not everyone thinks so, of course.

Another thing that I love about Kobo ereaders is their integration with Calibre. You can configure Calibre to automatically modify the metadata and collections on your Kobo, without any need for manual input on the device or for resending your books. You can copy your reading progress back and forth between your Kobo and Calibre (useful if for some reason you want/need to factory reset your Kobo - I've never needed to do that, but I like to know the option is there). You can automatically back up your database. And so on.

Of course, this is assuming you use Calibre at all or even want to connect your Kobo via USB. Again, not everyone does.