> "Let me rephrase that. Is x86/x64 (or ARM, for that matter) architecture ideal to compile WASM into? Or could a different architecture be designed that would result in better performance?"

I'm sure you could compile WASM into Japanese or French if you had to. Maybe then, our French-native CPUs would finally be able to process "sudo fais moi un sandwich". My point being, you're asking a very broad, very theoretical question.

Are CPUs these days not performing well enough for most applications? If so, is it necessarily due to the complex instruction sets powering those platforms?