Should give away to turn on and off getting EXP so we still could get reward that come along with it, give us some small way to have strategy by not level up so fast will our power way under power because not so lucky with random power up... last tactic upgrade had go all the way for I got the upgrade just example 100/100 how unlucky I am. will most get their upgrade under 20/100... only player that luck does not effect is 10 player then spend over thousand of dollar on the game, does not matter if luck or not just spend more money to get all the power up.. and I sure do not want do survival trail again them, so try level slowly but their cost of the reward of not just EXP but box and coin that come with it and also the event that tie into it ... , Game sure not a strategy game at all but a luck game if your lucky you can be powerful if not and want to be powerful going have to spend money to over come your bad luck., Your ideal make it more so.