Without cristal you cannot log for short time you migth join a battle to the end but in the true life you cannot. Tankie wil loose many players i think. Prehaps developper can give the choice when we create map with drop-cristal-box or not ;)

with Cristal box beginers tankiers can have cristal and so learn how to play ! If they were not only high level will have cristal and buy new gun and hull and again ....

It's change the player goal. When 100diams box fall nobody care for flag, or the real goal of the game. Golden Box must be added on the "tresure map" to be split at the end.