Who is CB? Anyway - Extensions based on a minimal subset allow for fragmentation. Yes. Which is probably intended? This can become a problem. Yes. Therefore it

Who is CB? Anyway - Extensions based on a minimal subset allow for fragmentation. Yes. Which is probably intended? This can become a problem. Yes. Therefore it should be possible to declare a use case like "all purpose computing" (personal computer) and define a required superset with specific requirements. e.g. RISC-V "Personal Computing Rev01" shall support the following extensions {list} And please tell me why a closed source, patented, licensed ISA would be better instead of just saying it's open and therefore fragmented and bad. PS: Insert here the usual "What's about" for Intels notorious CPU-Extensions or ARMs track of compatibility.