Having a webpage for features suggestions is already a big step towards making this a unique "family &friends" device.

But you need to provide a changelog for app and device firmware so that users are aware of the changes and settings added! Otherwise it causes a lot of confusion. Maybe you can show them in the portal about tab.

For example I noticed that firmware 1.2.1 added transparency to the caller window.. It took me to days and a reset to realize that this was a feature!