Have you looked closely at Julia, or are you just kind of aware of its existence? I've been learning it recently, and I'm actually quite impressed with its suitability as a general purpose programming language because of how much of the marketing is oriented toward scientific uses. I'm going through Crafting Interpreters and translating it into Julia (mostly so I'm sure I understand what I'm reading) and it's been somewhat interesting to not have to deal with the expression problem.