Proposing a 64-bit only x86 arch (tentatively x86-S) is all well and good, but wow Intel still hasn't gotten over AMD creating 64-bit x86 (AMD64/x86-64):
https://www.intel.com/content/www/us/en/developer/articles/technical/envisioning-future-simplified-architecture.html

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Since its introduction over 20 years ago, the Intel® 64 architecture became the dominant operating mode.

No, the 64-bit architecture Intel introduced was Itanium (IA-64). That was also jointly developed by HP, based on their PA-RISC arch. It crashed and burned.

This is admittedly rather minor, but it irritates me to an almost irrational degree.