Reduce Knowledge usage every time you change talent branch

[Blizz M 2]

Please, regarding the talent branch problem, can't this be reduced to move to another branch? 18k-20k is a lot, whereas we players can only get 3.3k a day and that's if we work full time a day. The problem is that each branch has its own advantages, for example if there is GVG/Arena, we will definitely change it to the PVP branch, but PVE is very bad. This means that every time there is an event we have to change branches mutually, this is very difficult for other players, especially mage users, at least 5k usage per change. I'm sure many players complain about this problem, Knowledge cannot be bought in Mcoin so not all players can be active every day for daily work.