Does it have (1) a RELP, (2) jupyter support and/or smth like it, (3) interpreted mode or a compiler fast enough that I can pretend it does not exist?
Without these it might be a a powerful tool, but it wouldn't be in the same niche as Python and R.
Also, having touched Scala once before, the complexity and learning curve, and the prerequisite of being knowledgeable about JVM ecosystem to be productive in it...