I'm in the java ecosystem, so YMMV.

- Automatic spring service detection

- Debugger (remote, local , with access to state, stack and ability to modify the state while stepping through), though I assume this is possible with neovm?

- built-in profiler

- can run individual tests seamlessly

- understands bytecode enhancers like Lombok

- Find Usage, find symbol, language specific navigation, showing class hierarchies, going up/down the hierarchies etc (maybe in conjunction with LSP, other editors can do a decent job?)

- Advanced refactoring (extracting classes, interfaces, inlining functions, extracting functions/methods)

- built-in database explorer

- built-in Git support (I have struggled mightily with VSCodes git interactions - but this might just be an individual preference)

- markdown/html previews

Basically, I barely have to get out of the IDE.