Waiting for the N1s to reach zero has been corrected by a software upgrade. However, IMHO I would still wait. It only takes a few seconds. Most FADEC faults are a result of pilot error (just being honest). Such as shutting down the aircraft with the engine heats on, and such. Your fuel burns are also going to improve such as in the climb. I'm sure none of us can hold the 102.4% all the way up in the climb better than the FADEC (I wish I could but I can't), and that is money saved over the long haul. Just my 2 cents.
Tailwinds all!