Wouldn't Julia be that language? Its fast, supports static typing, and is built from the ground up for machine learning/ data science. It also has a built in REPL.
1-based indexing is definitely not a flaw. And version 1.6 massively decreased package import and precompilation time.
It really is. We've known it for literally decades:
https://www.cs.utexas.edu/users/EWD/transcriptions/EWD08xx/E...
My own preference is random indexing, it's so much more exciting to be surprised https://www.juliabloggers.com/random-based-indexing-for-arra...