I think we're literally months away from Android tablets being able to replace full featured remotes for good
That won't happen. You can currently use them to control Canon DSLRs but's that because they basically use an Android version of Canon's own remote capture software, so it's never going to happen with any camera that doesn't support remote capture over USB such as Sonys. The only way to do it would be to have the tablet control a separate add on remote which then controls the camera, like some people have done with arduinos, but then you may as well just use the remote and skip the tablet as you won't get any added functionality such as touch focussing or live view (unless you use the video out such as mini/micro HDMI, but even then you'd be better off sending that to the tablet and still using a separate remote).
OK, mine is the best remote available 





