Which packages would you say are the most glaring omissions? I thought that R would become even more popular now it is on Azure ML - (if you haven't checked MSFT Azure ML out you really should - it's a blast).

I use both (cut-paste monkey!). There seems to be a bit more magic with R, less code. Shiny is pretty cool too.

btw - shinyproxy package was compromised recently - check your download hashes :(