i do agree that something needs to be changed on stamina

i see the point, where the devs do not want everyone to level up to fast as well, but the goal should be to allow the players to play the game more frequently, weather you add another boss type of event ,or a new one that involves things like, side missions without using stamina, the user base will end up quitting because of a failure of activity early on and sustained throughout the game

at this point, i do not see a perfect solution, but maybe change the times for free refills of 30 stamina to 50 stamina twice a day, and lower the cost to purchase more stamina per day.