Something like this.
Not a new idea I'm sure, but I think it would work to the advantage of this design.
Rendered by someone a hell of a lot better at CAD than me
The 1/2" inlet hose goes inside the 1" outlet pipe, and is split a distance from the block itself. In my view, I think it looks very clean, and gives the block the look of having no outlet, which I reckon is cool
In the renders below, none of the block furniture is shown, or the starws etc that the cascade uses, but you get the idea.
Opinions?