But if you're in the Apple ecosystem anyway, I think it's really convenient to take complete disk images for a full system restore. I think it's cool to use a 3-2-1 backup chain with a backup system image.
Granted, this is coming from someone who uses Tarsnap, Arq and Crashplan; but I've used Apple time capsules and I really admire their usability. In a restore scenario I don't have to choose particular files or folders, I just have to choose a date and the entire system is back. This is not without its downsides (no granularity in restore), but it's super convenient if it's what you need.
If I were in a decision making position, I'd get rid of the Apple routers like they are doing and double down on time capsules by providing an integrated offsite solution, perhaps marketed with end to end encryption as a nod to privacy advocates.
In my experience, it's always been easy to set up. Actually using the Time Capsule, I've had one Time Capsule die, and one instance where I used a backup over 8 years. Retrieving the data from the backup was easy, without requiring a reference to a manual, IIRC.
Not necessarily a good thing when I'm tethering, but neat other times :P