I fear they'd quite soon become mandatory in our inventories. Even if you don't plan to use them, in the event of an odd chance, when you should have them, just to avoid going back to town to buy them or get them off your retainer.
1.0 mobs were fine. Sight + sound is enough in my opinion and frankly the only ones that feel organic to me as a player. I either have to actually walk so I don't make sound, and heaven forbid I accidentally run (Treants!!!) or I have to navigate myself behind the mob's back to keep out of their sight. Somehow popping a potion and goin "Ok, so now I don't smell" does nothing for me.
