Here's my prediction, bob:

Assuming you get the dedicated functionality you want (I have no doubts), and lock out regular N800 functionality, you're going to end up with some users who will eventually realize they have an N800 on their hands and start demanding the missing functionality. The advanced ones will go so far as to figure out how to get it back AND support your home automation use ().

You may want to minimize that by customizing the faceplates. Many here have done that, with faceplates I used to be able to provide (all out though, sorry). Just remove the N800 faceplate, primer it, and paint over it with some neutral color. Heck, you may want to even look into inking some sort of logo of your own there.

Anyway, something to keep in mind.