As the title says, I've got a few friends that got permabanned and don't play the game anymore. I'm very certain they would rejoin if the bans were lifted. Let's say, enter League before 17th Nov and you'll get your ban lifted!
However I suggest their honor level remains at 0 and a next minor offense will lead to their account being permanently banned again.
Hope you will make an exception so everyone can enjoy the anniversary together!