I want a FOSS PL with bloated higher level primitives and APIs, like Wolfram. Think about how having a data frame class (+meta-programming) makes such a big impact in R. I want the same for images, sound, etc.
Racket (https://racket-lang.org) has quite a lot of mathematics support (rationals as ratios, imaginary numbers, exponentiation, implicit integer->float coercion), and comes with a dedicated IDE, although it's a lisp, and I don't know if you'd like that (I certainly do).