> It's mildly understandable that Intel didn't want to implement (1) on the E cores (though it would arguably have been better to just dual-issue them, like AMD

> It's mildly understandable that Intel didn't want to implement (1) on the E cores (though it would arguably have been better to just dual-issue them, like AMD did for 256-bit vectors on the original Zens). But there's no reason not to implement (2) and (3) on the E cores. It is very likely that all these aspects are very hard to separate from each other.