B.The Codex form, in general,was always frowned upon by the Ashkenaz leadrship
To expound (although possibly too much has already been said:
Who wrote all the Codes (such as the Rambam and Shulchan Oruch)? They were accepted, adopted and constitutionalized by poskei Ashkenaz but with some condensention
The Vilna Gaon was beseeched upon to write a new Code,gave it some thought but then declined.