What about a graphical front end to R? I wonder if 90% of R's use cases could be represented in the form of a flowchart diagram, which then would generate R code. One could have the automatically re-run the script when the diagram changes and render graphs and other output. I was thinking of having a "remote control" for such an app on the iPad, with the ability to use the keyboard/mouse and script certain things by hand to enable the more esoteric 10%.