Please, do not make a decision that drives most of games players away. You might only care about those few whales, but if they don't have people to play against, they won't stay either. If you plan of putting these runes in game, at least give us ways and time to get enough Advanded runes, so people could some day start using these even higher leveled runes. Most players are still trying to get to lv 10 runes still. Putting them to game now would really unbalance the game. Low whales, mid and low spenders & FTP would suffer because of this.

Having game generate money for a long time migh bring more money in total than short burst and then ending the game. You might say that game isn't ending, but you also said 6.0 isn't yet arriving... on same day you later announced it in next weeks events. If people belive game will stay for a long time, they recharge because they belive they'll get something for it. Please, don't let us lose faith in this game just yet.