I raced again last week as the 787B is too much of a joy to race on Sarthe not to. So I got to compare the second week of (almost) no penalties to N24 a while back with totally broken penalties.
The difference is going from 19K to 33K DR instead of getting DR reset every day
All still without qualifying but now I ended up in the highest rooms (A+/S A/S). Racing wasn't any cleaner there, still mostly dependent on time of day, day of the week as always. Hit 'n runs were rampant in the high DR rooms, but thanks to 30+ second pit stops and the field split between 5M/1H, 1H/5M, 2H/4M, I hardly saw anyone during most races. (Doing 2H/4M in the 787B) Yet whenever a Hdi fap had the chance they would try to barge through, run me off leaving me with an ignoring track limits penalty.
It seems the higher the DR, the less variation in cars used and the less sportmanship on the track. People in lower DR rooms did leave room, pulled over to give the position back after a dodgy move (some, definitely not the majority, but more than in higher DR rooms) and even apologized after the race (A+ almost never apologizes, only if they know you, it's always because ur slow)
Great racing in the high DR B, low DR A rooms (I got to hear my favorite sound, 2 787Bs creating harmonies next to each other), A+ A rooms sucked.