Yup, no pokevision has pretty well killed it for me as a semi-small town player. Pokestops are too far and few between and while walking after the update, I saw nothing but pidgey and rattata. At least with pokevision I could make little detours here and there for whatever I saw I hadn't caught yet when it popped up on the tracker. Now it seems like the tracker is useless, so when I do see something pop up I can't find it, wandered around a couple blocks looking for just a krabby that popped up. Also, hard to tell if there are fewer Pokémon or just less varied ones in my area, but definitely not seeing what I used to.