Yeah bluetooth would probably limit how much you could interact with the camera, and you would have to diy a bluetooth module and get some firmware for the app to control. Honestly, I would be happy just being able to release the shutter wireless using this app.
Another question, can you use dslr controller at all with magic lantern?
I have a question about the DSLR Controller... because the 550D is capable shooting 1hour and longer shoots (with a help of magic lantern), I'm interested in an option of shutting down the liveview screen on my camera when using tablet for shooting. After an hour of shooting the camera heats up really quick and it would be usefull to dim out the screen and watch the liveview on android tablet. Only that way there would not be any heating problems....
is it possible to include such an option in DSLR controller?