I didn't say you take over every single one of their biological functions. That's why I said "tell them what effect you want to achieve." You're simply pushing them towards your end. They still have the ability to think or act outside of that.
It's like a much larger scale version of "Give me your taco." The taco owner performs the act of giving me the taco himself; I merely told him to do it.
None of these powers are more low profile than telepathy. There's really no way to discover a telepath if he wants anonymity in the real world.
I agree that it would be boring btw, and I doubt I'd want to rule the world. I'm just saying that it would be quicker/easier with telepathy.