To me the tradeoff is mask and shift / bitfield v go get instruction, this instruction relies on data, go get the data, now complete the instruction. It seems t

To me the tradeoff is mask and shift / bitfield v go get instruction, this instruction relies on data, go get the data, now complete the instruction. It seems to me that would add complication, more so than a weird width. I suppose you could conceptualise an instruction data pair as one 16 bit instruction.