Will we see the next generation of electron applications using WASM for the bulk, and JS for the UI?
For native applications, maybe a better idea is to drive the UI with native code, and use WASM to run "untrusted" external code (for instance extensions/plugins), because a WASM runtime is a lot smaller than a complete browser engine like Electron.
If you write Rust for WASM you could just use a native UI framework and target that instead!