Now we are talking about sth different. Releasing potion effects is ok. when you want to do such huge open world. Now we are talking about "infinite potions" idea. For example, you gather ingriiendients, make potions and when you use all of them, you dont need to go to explore and search for the herbs or etc. again but you can refill it by the campfire or in the tavern for free. You dont need to make them again and again. Just automaticaly refill. That is very casual system so many fans are very sceptic about it.