Why a new .indd file format with each update?
There was a time ID didn't require a new file format with each yearly update. Although I realize some features may genuinely require a new .indd format, I'm not sure the changes to latest CC22 require one. This is the 4th or 5th consecutive change, which means I have to update all files I regularly use through the years (standards manuals and the like). I can still seamlessly open Photoshop and Illustrator files from 5-10 years ago without worrying about re-saving them.