goboscript allows you to create advanced Scratch projects with ease, you can use any text editor, use a version control system such as git. You can refactor your code using search and replace. Text code can be copy pasted, which allows you to easily reuse code or share it with others. goboscript syntax is concise and easy to read.
goboscript allows you to integrate external tooling and workflows, such as using a script to generate costumes for a text rendering engine. Or loading in images into lists.
goboscript has a powerful macro system - similar to Rust's macro system. This allows you to write macros to generate code.
goboscript is more than just an 1:1 mapping of Scratch blocks to text, it also has additional features like local variables for procedures (custom blocks).
goboscript also performs optimizations, detects problems and unused code.
All of these new features are impossible in the visual programming paradigm.