Sony Pro Camera Mode - What Is It?

i would love for them to do what knockee did back in the lumier days, which just have just the basic camera mode. Why is there arrow on the like if you're holding shutter button under your right thumb? I think they're there feeling islike the people who want that are just going to spend the 30 bucks on hali or they're just going to be white room users, or whoever. What about people who don't want that? They still have apples camera ap whichi just can,. i just ask, why is the button that shows more options next to the shutter button on the other side of the frame?