Yeah, I think that's probably right. If people "knew" that there is a God, they would be even more freaked out than they are now. Some people would not be able to fart without checking with God about the "correct" direction.If he said hello at least we would all know he exists. Perhaps divinity doesn’t want us to >know<, as that would affect outcomes, and how we think about the world. In other words divinity would be interfering, and if one were an inventor or artist, you would want to think you done that achievement and not have it taken away from you. So maybe its the same in all cases, our efforts are our efforts and achievements.
There are some real advantages to God's "invisibility".