What's the goal in reseting our accounts?
If you don't implement any new content worth playing, it will just frustrate players who have reached the point of having a decent card base to have fun playing with, and building decks... If you want to fight against reselling abuse in the shop, you won't be successfull. Once those abusers have a bit BFP farmed after a week or 2, you have your problem back again.
Good to know its the "last time" the accouns will be reset, but i reached everything in the game and still have fun playing arround with diffrent decks.... How do you intent to keep players like me, who will just get frustrated of losing everything (Ranks + Cards) and getting nothing in advance? I'm not sure if i want to play months again to get a decent card base back again, to build up fun decks without any big changes to the game (e.g. new campain, new big card base, new PvE maps, higher rPvE player number, ...).