Visual programming is useful in some niches, but for general purpose you either have to have less power than a text based programming language (and users will beg you to add that power) or it will become exactly as complicated as a text based programming language, but more cumbersome because whatever you're doing is slower than typing.

I feel like the whole idea of visual programming comes from some fundamental idea that the hard part of programming is learning the syntax, which I just don't agree with at all.