Teemo should get a rework
I think that Teemo needs a rework but not that kind of a change. Here's what I have in mind for this monster.
Passive - Swiftness Teemo gains increased movement speed (10/18/26%) Damage from champions and structures will disable this bonus for 5 seconds.
Q - Blinding Shot Remains the same
W - Intel
Teemo plants a totem on the ground which grants 1000 vision around the area for 60 seconds. This can be destroyed.
Mana Cost: 20 at all ranks Cooldown: 20/15/10 seconds Limit: 1 intel can only be on the ground while Teemo can hold about 2 charges in his trusty backpack
E - Toxic Shot Teemo's auto-attacks deal bonus magic damage (25/30/35/40/45(+ 35% AP) and poisons his target, causing them to take additional magic damage (20/ 30/40/50/60 (+ 40% AP) (+ 1/2/3/4/5% of the target's missing health) over 3 seconds. Subsequent attacks only refresh the duration.
R - Noxious Trap Remains the same