That’s your prerogative. Most of these changes have come from the many discussions with the designers on the Ratcatcher Discord for WFRP after use in play. I’m really glad that they are happy to publish variants and options. They’re not essential - they’re just very good and highly recommended.They really need this. I think the spread of more or less essential rules updates across various books are a big barrier to on boarding new players. I know I won't invest in 4e before there's a 4.5.