1) play.golang.org is a popular feature of Go. Why not have better versions ? (e.g. an IPython/Jupyter kernel) 2) Golang depends on code generation for a lot o

1) play.golang.org is a popular feature of Go. Why not have better versions ? (e.g. an IPython/Jupyter kernel) 2) Golang depends on code generation for a lot of it's features. Executing generated code immediately could be helpful. 3) Very quickly execute small tests - one of my favorite python and java/eclipse features that I find somewhat lacking in Go and very much lacking in C++ development : Unit tests that execute before you've fully processed the fact that you pressed the test button in the IDE. 4) Security isolation of parts of programs would be useful 5) Same with various other isolation principles - memory usage, cpu usage, ... 6) I've always thought that Go's best feature is that it's pretty good at compiling different processes into one binary that then work pretty independently. But as I've been making bigger programs I find this less and less true. Truth is, we need a programming language that is an operating system. Sort of like Erlang, but euhm, somewhat more usable. Go isn't that language. A language where you can start up a thread with $megabytes memory available, $cpu cpu allocation, kill if it goes over it for more than 2-3 seconds and restart after waiting 500ms. Something like that. It needs to be a language where you can really do separation-of-concerns - optimization if compiled into the same binary - minimal code changes to move a specific service to a version running on a different machine.