What new features does Kaspa's codebase reform make possible?

Reforming Kaspa's codebase is intended to unlock major new features that the current architecture cannot easily support. The existing code has components that are fragile and hard to extend, which blocks work on things like smart contract support and a consensus ordering algorithm upgrade. Rewriting in a performance-oriented language with a cleaner architecture is described as crucial for making those features achievable. For beginners, this matters because smart contract support in particular would significantly expand what developers can build on top of Kaspa.