My bet is Nim. Because Python just topped the PL ranks, there is lots of people learning Python as their first/only programming language now. When some of these

My bet is Nim. Because Python just topped the PL ranks, there is lots of people learning Python as their first/only programming language now. When some of these eventually need to learn a systems language, Nim will have familiar syntax to piggyback on Python's popularity, just like Java or JavaScript did in the past, piggybacking on C curly-brace syntax.