Honestly I think Nim is more compelling as an application language than a systems language. I know there are plenty of people that care about Nim in the embedded space and are improving the experience of GC-less Nim. But for me, Nim with GC strikes a nice middle ground between speed of development and speed of execution. I can hack a project together quickly and get a native binary that executes much quicker than a scripting language. Its definitely my favorite language for hobby projects and I'm looking forward to the 1.0 release.
Couldn't agree with you more here. I personally use Nim as an application language too and it will take a lot of convincing to let me go of the precious GC :)