First off, fantastic work on HousePad Adam. It's a great app, you should be proud.
Have you considered any features that would prove beneficial to a permanently mounted tablet? A couple of thing sprig to mind, forgive me if some of these are already on the app or in the works:
1. Auto-Start on a control page - a switch to allow the app launching directly to a control page, perhaps an auto-load of a user-defined CP, or if that is too difficult, simply loading one called "HousePad-Home" if it exists. An auto-boot into HousePad/Control page would be awesome, but that can be handled by rooting the device for those that really want it...
2. Wake on proximity - A screen blackout/backlight power-off that with maybe a simple camera based motion detection that samples pictures 1/second or so. You could have configurable options for last-touch time-to-screen blank, motion sensitivity threshold, and image sample rate.
3. Support for non-existent controls in Indigo - The thought here being that you can use an existing Indigo control (lets use a text field that displays a variable for this example) with specially-coded content to drive the behavior of the client. So if I place a text control somewhere on a page that displays the content of a variable, under normal circumstances the value of that variable is displayed, but if in that variable I place the string {Vslider, 0,100,57,LR_Volume} instead of displaying that string, the client would display a vertical slider control with a range of 0 to 100, set the current value to 57 and report any changes to a variable named "LR_Volume". It would be a great way to get around some of the UX limitations in Indigo. You could start by just using native controls for now, and then branch out to theme support later if needed. I see this being beneficial for sliders, numeric keypads, list boxes (music lists anyone?) and possibly several other control types.
I have others, but that's a decent start. I would love to hear your thoughts. Again, it's an excellent app. Since the next version of Indigo Touch won't support all of my original iPads that are permanently mounted on the walls, I've been considering a move to Android and if so your app will obviously play a huge role.
Terry