Please put effort into a good IDE that leverages the type system! I've been using Julia for two years now, and there's enough code to navigate through that it's becoming difficult to maintain. I'm really starting to miss Java/C#/ even C++ IDEs where you can easily jump to a definition or get a non-fuzzy autocomplete. Not to mention the refactoring support of the IntelliJ products. For a language that promises to handle both the high level and the low level, it really is not scaling well with codebase size. I've also been reassessing my needs and realizing that only about 20% of my codebase is quantitative code, and then with most of the work being sent off to raw CUDA or Theano. So I'm actively considering a better tooled language. I love how expressive Julia is, but that may be getting in the way of tooling. One issue that would help a lot is return type declarations (https://github.com/JuliaLang/julia/issues/1090). Return types would dramatically ease creation of IDE plugins.

Any tidbits about whats in store for the stats ecosystem? Tidyr/Dplyr style workflow? Flexible and Generalized stats MLE/ Bayesian modeling using distributions? Streaming and out of core support? What will the timeline be like?

I'm trying to make an architecture decision right now and this would be helpful (and whet my curiosity :p)