I would love to see this, talkback is open source and you can easily have rh voice as a default synthesizer, since jenux does not support secure boot and android does, I am sure its possible, on a tipicle android phone or tablet, all you need to do is turn on talkback by holding both volume keys, now if a laptop had volume keysthat would work but for the iso, you could have an installer that has speech with speekup for linux, with that somebody could install android, then with that, impliment talkback to start automatically, not only that, but have a notification sound set as the default, I have all of the ones found on my tablet in a zip file, the free version of talkback is available from f droid and can if you choose to make it, asystem app