1. VS Code with the Rust plugin along with rustfmt and the rls is great - when it works. I've had some issues now and then, but the tooling is pretty great.

2. Not qualified to answer this

3. There's a ton of rust libraries out there. The whole cargo ecosystem is quite nice.

Coming from a C background (and dabbling in lisp), I love Rust. It's C with batteries and concepts from functional programming - iterators, immutable data. The only times I've struggled with rust is when trying to mess with pointer arithmetic and evading memory safety (e.g. trying to program a garbage collector for a Lisp interpreter)