It's remarkable how many successful languages don't provide namespaces.
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I've heard of 'blub languages', where you don't realise that other languages have better abstractions until you've experienced them.
I think the same thing happens with individual features. I've seen several C++ folks miss variadic generics in Rust, but I've not written enough C++ to feel it.
If you created a large, successful OSS project, would you want to be BDFL or move on after a period?
I see tradeoffs on both sides, although it's not a decision I've needed to make myself.
Coming from JS or Python, imports in Rust feel weird. They're entirely optional aliases for fully qualified symbols, which are always available.
I don't know of many other languages where you can just start using libraries. Java is the only one I can think of.