Believe me, you don't want a NAS at a chromecast level. Chromecasts are designed to be user friendly and hide a lot of settings. That wouldn't be a problem if the things worked at least. I can't even count how many times I've had to reset a chromecast because something broke and wasn't fixable.

A casual user would never buy a NAS at all, since most prefer the ease of something like iCloud or Google. If you buy a NAS you often have a specific reason to (too much data, needing to be able to reach a speed to work off of it, security...) and then the fiddeling becomes an advantage I feel. Yes it's a bit more effort, but you can get something that actually does what you want to instead of what the manufacturer thinks that you want it to do.