A genuine IDE for data science would be very useful, in my opinion. Something to unify code, data and models would be really interesting. An ideal tool would allow frictionless experimentation, but also maintain continual reproducibility.
I'd love the same. I often think that a good data science IDE will end up looking like RStudio with mlflow abilities. I barely use R at all anymore (or IDEs really), but RStudio is still the best attempt at a data science IDE that I've come across.
knitr/Sweave integration for literate programming, dedicated panes for plots and printing `help` documentation, and not having to mix code and output like notebooks do. It gets a lot of things right (for me).
