Yeah, concurrency in blorp doesn't allow shared mutable references, so deadlocks aren't really a concern. Otherwise it's meant to be simple-ish -- virtual threads, channels, no async/await. Pure functions allow safe parallelism naturally, so that's fairly straightforward, though the API is still incomplete, for example the "Parallel" section here: https://blorp-lang.org/docs/lists/. It's still under heavy development (working on it right now).
What are the over-arching goals of your language?
Right on.
1) I want to minimize global complexity, which by definition maximizes local reasoning.
2) I want to make the vast majority of bugs simply unrepresentable - taking it past Rust, and even past Pony - WHILE allowing shared mutable memory, but without requiring a PhD to use.
The goal is in EASY mode, it's barely harder to use than Ruby or Python (just the occasional pedant compiler error that has automatic options to fix itself most of the time). You don't even have to supply types or compile. It has a REPL, etc.
When you bump to DEFAULT mode and then to STRICT mode, all the annotation is automatic - your code just might look "ugly" if you like having no types anywhere etc.
But DEFAULT & STRICT mode give people and LLMs everything they need to know to understand the effects of an individual function.