I second the different profiles for server, laptop, and so on. Though I know the kernel already comes with default configs, so I think there could be room for specialized kernel config options in addition to what's already there.

Though in my opinion, there's already kind of too much segmentation between the different use cases. A server is just a role for a computer, and embedded could literally mean anything. Quite a few WiFi access points come with a USB port on them so you can plug in a USB drive and start a SMB server.