just add 3 new alchemy medals so the 2%ers will sink items. they can just toss the pots in the trashcan as long as they are sinking items.
focus on velocity of potions created per day. it needs to be a lot. I would suggest increasing potency while decreasing duration, i.e. KE 350 for 10 min. also minimize potion composing cost, at least in the beginning.
maybe tie in a stamina sink as well. 25 stam = weak potion, 1000 stam = strong potion. 2500 stam = epic potion