And, if you want to literally run the bytecode, there’s that little issue of nested blocks and block start/end tags…a proper WASM CPU would have to perform pars

And, if you want to literally run the bytecode, there’s that little issue of nested blocks and block start/end tags…a proper WASM CPU would have to perform parsing in order to handle any form of control flow. (Alternatively, you could load not-quite-WASM that’s been gently preprocessed to use normal jumps, but at that point why not just go all the way and generate native code for a real CPU?)