I dont hoarde stam actively like that imo you shouldnt.
You are not going to gain any stam once you hit your max 160 atm for me cap is 100 on server 9 anyway to be more efficient or to get the most out of the already to long raye of 1 stam per 6min 10 stamina per hour . thats only one battle every hour or 4 battles per just under 3 hours or raids of the 7 stamina chapters for like.
That is way slow imo always has been it takes avg players like a full 15 to 20 hours for the higher team leveled players
I'd like to see it be more of full stamina gain twice in a 24hr period instead of only once
I think my math is correct haha