V Programming Language
I love looking at new languages. People invent really creative  stuff. However, my exploration usually ends with "this is great, but there are no libraries for it, so I probably won't use it".If you are building a language, starting from scratch is the epitome of Not Invented Here syndrome. Build it on top of an existing ecosystem. Look at Elixir and how it builds on Erlang and interoperates with it just perfectly. Or look Groovy, Scala and Clojure to see what kind of range you can get from a single platform. With the exception of Go, every language that has become popular in the past 10 years, built on something else.