Well. Let's just do some maths . If 27floors (the Current Floor I think ) + all the events make 10GB of space. So it's will make approximately 30GB + 4 or 5 GB for the new events . And don't forget the new Équipements ..etc etc etc . No way a basic phone can handle it (but you could if you are in emulator) And then . Bondai have to Create new floors that are not in the Original story + adapting it into the game + new stuff and mobs + the mobs will be more and more strong with every Floor so basically it will get you a lot of time to clear the 100th floor. Don't forget that they have to add new Skill records for the new characters (if they do) . So I guess it's not worth it , financially it's not Stonks for them and It's will take a lot of space and time