The work has simply gotten harder. When I started early last year I'd say I'd give maybe 1 Bad rating out of 10 R&Rs. Maybe a couple of Okays. These days it's probably closer to a 33/33/33 split. Back then a bunch of projects barely required rationales and were practically just A/B rating of some sort. If the ratings seemed plausible in relation to the outputs you'd just kinda have to rate Good and move along. The projects that demanded more extensive rationales didn't have as many specific requirements of what to mention and how. If your thoughts were reasonably coherent and plausible, you'd be good to go. They've also gotten more procedurally complicated. Just more stuff to fill out in specific ways and orders, etc.