This is a great idea. I'm the target market for this device - short on time and a little challenged on coding!
I've reviewed your FAQ, but still have a few questions you might like to consider and add into the list.

1. Support: what is the approach used to update these packages - is there built in version updater package, or a simple script someone can follow, there are many updates to these systems I would not want to mis-out on.
2. I am in the process of designing my own devices, ( Flip/flap, weather, focuser, etc), it is not clear to me how one might attach these devices to this setup? Can i assume that if a device (and device) meets INDI drivers standards, then they will be plug and play?
3. I've loads of raspberry Pi's and power supplies for my local plugs! Would you sell the SD card with preloaded software?